I personally run profile amps. They are a great amp. The new CA line looks awesome, performs awesome and has all the great features you need in an amp. The only thing I don't like, is they don't have pass through RCA's, so you can't run RCA's in AND out of the same amp.
This is generally not a problem, since most people run multiple RCA cables anyhow.
I'd say go for it! www.thezeb.com has great prices on them and is a great place to buy from. I also purchased amps from www.millionbuy.com and was happy with their service as well.
Well, those 1200's put out 900w RMS, so the answer is no. And.. the amps are rated at 14.4 volts, and you will only be giving them around 12.5 volts.. so you realistically are only giving them around 600-700 watts. So that answer is also no.