Right amp for mids.

[crownvictoria31]

So this is my 1st post here and I am very glad to be part of this Forum. Ive been reading alot on here and its very cool to see see and read about so many different things. Let me explain to you guys alittle of my system as I'm in need of alittle advice. Hopefully you guys can help me out and guide me on the right direction.

As of right now I am running on my rear deck:

four 8" selenium mids( http://www.amazon.com/SELENIUM-Professional-woofer-level-performance/dp/B000MN2O6I )

4 3.5" pioneer bullet tweeters( http://www.amazon.com/Pioneer-TS-B350PRO-Efficiency-Bullet-Tweeter/dp/B009MS7DS8/ref=sr_1_2?s=electronics&ie=UTF8&qid=1418149148&sr=1-2&keywords=pioneer+bullet+tweeters )

I also have 2 amp which are:

MB QUART ( http://www.sonicelectronix.com/item_27474_MB-Quart-ONX4.125.html?gclid=CNXSvd3JucICFfPm7AodOhEAOg )

MB QUART ( http://www.sonicelectronix.com/item_67855_MB-Quart-OA1100.5.html )

I am useing the 4 channel amp to power my selenium mids and my 5 channel amp powering my tweeters and subs. I am happy with my 5 channel set up so thats not my concern. As per the 4 channel, I beleive I have it correct but I am moving up to 4 10" Crescendo mids. This is how I currently have my 8" Selenuims wired.

I have 2 Selenuims in parallel dropping them down to 4 ohms and bridged receiving 500 watts at 4 ohms. The other pair isthe same way. 1st off, was this the way to do this? Am I over powering my mids. They do sound loud and clear. What im trying to find out though is if the same amp will push my Crescendos pwx10 with no problem and should I wire it just like the Seleniums are?

Another question I have is, is the 5 channel really needed for my tweeters or could I have some how hooked up the tweeters with the seleniums on the same amp and if so, how?