The eD subs have gotten nothing but good reviews from everything I have read. Overall, people seem to be quite impressed with them, and I'm guessing you'd be pretty happy. I haven't heard them myself, so all I can do is report what I read.
The same is true of the Avonixx amps. Being that they are basically made to run the eD subs, they are a good match. Again, prices seem reasonable.
As for your interior speakers - more power is always better. You'll be amazed how well even cheaper speakers can perform when fed a healthy dose of wattage. Personally, I like a balanced sound, not overpowering bass. Unless you amp your interior speakers also, you might run into the "basshead" syndrome.....
That said, I run Lanzar Vibe amps, and they are amazingly powerful, and amazingly cheap. My speakers are Infinity Reference components, and they put out some serious volume with my cheapo amp - I'm 100% satisfied, and the amp only cost me $130 shipped, BRAND NEW - that's unbelieveable.
I run a Vibe 428, which is 125 watts x 4 - the other 2 channels are run to Peerless drivers in the rear doors. I also use a Vibe 248, 600 watts x 1 bridged to a pair of Infinity Kappa 10" subs. This amp was also $130 shipped.
That's $260 for 1100 watts of juice (or at least pretty close to that), and a steal of a deal. Even if the amps are a little overrated and don't put out quite the power they say they do, for that price; I can deal with it.
I've been recommending these budget amps to people ever since I installed mine, and the few who have tried them have also been very impressed with the value. These are not crappy amps - they are American made units at a bargain-basement price.
I got mine from
www.ikesound.com.
~HH