the Soundqubeds are built a lot better. 3 inch voice coils compared to the type R's 2.5 inch voice coils meaning it'll handle a lot more then 1.2k with ease. Paper cone which is pretty much the best cone material on the market, and the magnets are a lot beefier then the type Rs. Pictures on the site doesnt do it justice, its a lot bigger the then the type R in real life. All in all, you can expect to get a lot louder then the type R in a proper enclosure and sound decent while your at it. The amp its a decent amp, will have some headroom for you when impedance rise kicks in There are better amp choices but honestly they cost almost your entire budget but will provide globs of clean power well over their rated rms. Dont think about buying some premade mass manufactured box, any sub will sound like shiet in those.
Hell, if you want to take a step up, go for the hdc3s they'll do some destruction on your car.
Type Rs are good subs but there are better, much louder alternatives in the 1000 rms range. heck even some 600 rms sundowns will mop the floor with the type Rs.
subwoofer choices
sundown SA 12 - (handles almost double rms) sundown around here is nicknamed the king of research and development poke around a bit more and you'll know why.
american bass XFL 12s - are beefy too take a look at how much better built they are compared to mainstream subs take a look yourself ==>
http://www.caraudio.com/forums/subwoofer-classifieds/600060-american-bass-xfl-12-d4.html pure magnet slugs and cast iron basket compared to the bunch of plastic covered baskets mainstream brands use to hide their puny weak motors.
C2 audio threatcon 2- personally ran one in 1100 rms and it took it like a champ.
FI SSD - another reputable brand geared for lows.
You go into a few competitions and you'll see no one using JLs, Orions, Pioneers, Kickers or Type Rs. All Digital Designs, Incriminator audio, DC audio, Sundown and a few others not named yet in this thread.
As for wire, get 0 gauge Ofc copper if your budget allows it... but i guess copper clad would work too if your really tight on cash. Sky high, knukonceptz are the go to brands for those.