Ah yeah, forgot to mention the Thunder is 2nd hand, hence the great price, heh. Yes I always consider 2nd hand as money doesn't come my way as often as I'd like, hehe. Most of my Guitars are 2nd hand. :D
Thanks for all the advice so far, I think that trading it in when I have saved the difference later on is a good idea and hadn't thought of that. And thanks for the speaker advice too, sounds like and awesome way to get that "pro" tone.
I have decided then, as soon as I have enough to get the Thunder I'll go into the shop. If it's still there I'll nab it, but if not it wasn't meant to be and I'll keep saving for the Powerball. :D