any ideas?????

ok so my system as of now is:

pioneer deh-6500
cdt cl-ef 6.5's
clarion apx 201.2
oz audio matrix elite 12
audiobahn 4002t-bridged at 2 ohms and its not listed as 2 ohms stable(used to have a dei amp, but it stopped working)

ok so i'm wanting a little more out of this front stage mid-bass wise, and i'm thinkin about goin 3-way. so i figure the best way to do this without having to buy an active cross over is to high pass the cdt's at around 150ish, and have a set of dayton 7's or 8's run from 150 to 70. and i'd just low pass my sub at 70 or little higher. this all seems well and good, but i can't figure out what to use to crossover my midbasses. i could use the highpass or lowpass on the amp i would use to power them, but if i use one i can't use the other(i don't think). i was also considering just buying a bass blocker, and using the high-pass on the amp. does any one see a problem with that?

so i'm open to other suggestions, and i'm also open to other midbasses, and suggestions on an amp to give them about 80watts each or maybe more. has anyone been in this situation, and has anyone used a midbass that they would reccomend for cheap.

i'm also gonna need to get a new amp for my sub because i'm jsut borrowing this audiobahn from a friend and would also like your thoughts on an amp to power this dual 4 ohm sub. i'm thinkin about 400 watts at two oms or maybe a 2 channel, or a 4 channel bridged.