It is still going to interfer with the stage being in front of you if they are not kept extremely low in output. But it really sounds like you do not care about the location of or the quality of the sound so you should just do it. You will not find many on here that are going to side with you on this though so just do it and see if it works for you. Continuing to discuss it here is just going to go around in circles.
To say that i dont care about sound quality is obsurd or i wouldnt be on this forum asking questions & trying to understand all these new things.
Let me paint u a picture of where i come from & we'll go from there...
A month before my 16th bday i spent $2,300 bucks on a system in a car that was worth maybe a hundred bucks but that didnt matter cause all that did matter was people hearing me coming from a 1/4 mile away!! Back then all music was made on cassetts, there were no CDs cell phones or ipods, they didnt make subs with 50lb magnets & 3 to 4 inches of excursion. If u wanted more bass, u added more subs & if u wanted to blare ur heavy metal music, u put speakers wherever u could fit them including ripping the back seats out in exchange for 2 15" subs & a couple sets of 6x9s!!
Today im 35 & ive had a system in every vehicle ive ever owned & the last time i put a system together was about 7 years ago in the same model jeep as i have now & even that had 2 sets of components upfront, 2 sets of coaxials in the rear doors & in the roofs soundbar, & a single kicker sub. Please pardon me if i think the whole frontstage & no rear speakers is a bit much for me to picture & its the reason i have more then a few questions & as they get answered i have ideas running thru my head & so i ask about those as well. I am in no way trying to argue the concept of a good frontstage, what i am trying to do is have an inteligent conversation about the peramiters of a frontstage & no rear speakers. What im starting to hear now is that i should run front speakers only or dont do a system at all & thats a bit harsh to swallow.
Hopefully this is a good explenation of where im coming from, my confusion, my many questions, & will lead to a good understanding of putting together a better system then all my previouse ones which is actually my overall goal!!