Avoid the focal at all costs - they're awful, especially the tweeters. Loads of sibilance, harsh, shrill, and the woofers don't offer much either. The cost is misleading - in the UK the focals are only £150, and not even worth that - they look stupidly expensive in the US.

By contrast, the Morels (I've got the virtus 602) are stunningly good for the price (which is over 3x that of the focals).

So, I don't think you'll happily integrate a 4" to a 12" sub, and most people aim for a 6.5 or larger to cross over somewhere around 80Hz. A 2way can work well, but consider a wideband (rather than a tweeter) crossed around 400Hz.

Option 3 confuses me - you have an 8 channel DSP in that amp? Why would you consider using a passive?

So. option 4, 6.5" in doors, 4" & Tweeters in dash, all run active.

And again, avoid all cheap focal!!

 

The Focal model picked vs. Morel are not the same level.

Suggest Focal Flax Evo here if you want a closer comparison, IMO.

 

I can verify what LM said about Focal AS(S) series tweeters, I bought two sets (for front and rear) and the made my ears bleed...

Without ever hearing the Morels you mention, I'm reasonably sure they would be MUCH better choices than the Focals.

With that being said, I have heard these Alpines (the 3-way versions) and they sounded awesome, too bad that Crutchfield recently had them on sale (but it's over Johnny), but they are great speakers:

Alpine HDZ-65C

Status Series 6-1/2" 2-way component speaker system

www.crutchfield.com

 

Go 3 way up front.

I loved using Focal(K2 power baby) years ago(grew up on MBquart and Boston Acoustics)... but once I heard a good newer 3-way, I would never do a 2-way. I think the overzealous ear bleed tweeter ideology is because of poor mounting locations in many vehicles that some speaker manufacturers compromised with. That shouldn't be an issue with the Rav4 and could be difficult to tame. I tolerated the tweeter because my ears were accustomed to it from other brands with equivalent tinnitus monsters. With the Optim8, I pretty sure it'll make any tweeter sound pretty tolerable but my ol' ears only want silk and no metallic tweeters. recommend all active and don't bother with passive crossovers.

My recommendation is a 6.5-7" front door mounted midbass, a 2.5-3.5" midrange in the dash, along with a tweeter(mounted in the pillar like what ToyotaJBL does).

For example:

TM65 mkIV Midbass – StereoIntegrity.com

TM65's are sold in pairs. Order processing time is 3-5 business days.

stereointegrity.com

M3 Carbon Midrange – StereoIntegrity.com

M3 Carbon Midranges are sold in pairs. Order processing time is 3-5 business days.

stereointegrity.com

M25 mkII Tweeter – StereoIntegrity.com

M25 MKII Tweeters are sold in pairs. Order processing time is 3-5 business days.

stereointegrity.com

Alpine Status Hi-Res 6.5” 3-Way Slim-Fit Component Speaker Set

Alpine Status Hi-Res 6.5” 3-Way Slim-Fit Component Speaker Set

www.alpine-usa.com

PS 165 F3E - Kit 3 separate way 16.5 cm/8 cm | Focal

PS 165 F3E, Kit 3 separate way 16.5 cm/8 cm : enjoy high-quality speakers performance for car audio system. High-fidelity car sound system that will accompany you everywhere you go with the excellence of French brand Focal.

www.focal.com

VIV603CV2 - Memphis Audio

6.5" $ 3.5" 3-Way SixFive Series Component

www.memphiscaraudio.com

For Morel, hybrid 63 or Virtus 603.

GB60 6" (165MM) AUDIOPHILE GRADE AUTOMOTIVE LOUDSPEAKER - Audiofrog

Designed to be used in two- or three-way systems, the GB60 can be used in small enclosures or in infinite baffle applications. High power handling, low distortion and 9mm of linear one-way excursion

www.audiofrog.com

GB25 2-1/2” (63 MM) AUDIOPHILE GRADE AUTOMOTIVE LOUDSPEAKER - Audiofrog

Overview Features Technical Details Downloads Overview Designed as a dedicated midrange driver for special applications in 3-way systems, the GB25 is optimized for enclosures as small as 0.2 liters (2-1/2” […]

www.audiofrog.com

GB10 1" (25 MM) AUDIOPHILE GRADE AUTOMOTIVE TWEETER - Audiofrog

Overview Features Technical Details Downloads Overview Designed for installation in factory or custom locations, the GB10 1” tweeter provides low distortion audiophile-grade performance with extended high frequency response. The unique […]

www.audiofrog.com

Audible Physics Avatar 1.3.6 Active Component Set

Audible Physics has developed the Avatar line of Speakers with value and performance in mind. The Avatar 1.3.6 Set consists of the Avatar 6, Avatar 3, and Avatar 1. Avatar 6 6.5" Polypropylene Cone Powerful, high grade ferrite magnet Dual layer Copper voicecoil on 25mm aluminium former...

www.slaacoustics.com

 

If you are going with 6,5"+tw - choose higher lines from Focal...FLAX are quite nice

Version2 - you will have hard time to mate subwoofer to 4" midrange - not the best option
Version3 - best out of three options - why not add two amplified channels and go full active and ditch that passive xo

You could go with 6.5" + TW on the dash, but expect weak midbass - midbass will not dig under 100Hz in that location, but soundstage will be all eye level - many EMMA competitiors run similar setups