You mentioned everything except the most important thing which is the head unit. Without an ACTIVE NETWORK capable head unit, all you get will just be a loud and horrible ear bleeding sounding setup that basically sounds like sh*t because super tweeters need to be crossed over at 8khz to 12.5khz depending on the car its in order to sound good, in my buddy's altima it was 10khz at -18db slope. EQ alone with do anything, being able to adjust crossover points and slopes is the key to make your setup not sound like complete garbage. That alpine DSP is not a real DSP, its just a cheapo EQ. I'd sell that immediately for a proper head unit which will absolutely sh*t on that alpine EQ in terms of sound adjustments and EQ. Literally ancient outdated dinosaur technology that doesn't help anything at all compared to technology nowadays.
Dont even bother with any 6x9 in the back, waste of time and money Sell that for battery money. I'd run a 2nd group 31 battery in the back and you should be golden since you already have the big 3 done.
You might want one more pair of mid just to get the ohm load right since 3 pairs of 4 ohm mids are wired either 16 ohms series or 1.33 ohms parallel and the taramps cannot handle that load and 16 ohms is not anywhere enough power. so for 4 mids on the left side, you'll need to wire two pairs in series and then wire both of them parallel to get a 4 ohm load.
Can i ask the name brand of the mids and super tweeters you are running?
You might be able to go all out crazy by bridging that taramps 4 channel and get 1000x2 at 4 ohms bridged if you get beefier mids and really maximizing that amp's potential. then add a seperate two channel for the tweeters since they definitely dont need anywhere close to the amount of power that taramps puts out. Literally your ears will give out and literally bleed at 50 watts per super tweeter already so 300+ is definitely not needed. If you can jump up to some 250 rms mids like the crescendo UN 8s or 10s then bridged to that taramps 2000.4, sh*t will be nuts. I would not doubt if you have one of the the loudest mids and highs setup in your island
You can do two mids up front and two mids in the rear doors as well if you dont have space in one door for four 8s per door, you'll have one pair of super tweeters in front and one in the back door as well. You might even be able to jump up to two 10 inch mids per door if loud is your goal and you have fiberglassing skills.
Just throwing out some ideas making you spend more money lmao.
