I now have a Peavey 300 watt Bass Combo Amp. I am pretty satisfied with sound and set up. But I want more and maybe better..... (Class D for me). I want to purchase an 800 Watt Ampeg class D amp. A 450 watt Ampeg HE 15" Cabinet with 1" horn, A 400 watt Ampeg LF 15" bottom Bass Cabinet. I love 15" speakers and the lightweight class D set ups. My idea is to use the 800 watt Amp and only the 450 watt cab with horn on smaller to midsize gigs that I do most of the time. When I play outside or in big venue .... I would use all of it ! The Amp is 4 ohm and cabinets are both 8 ohm. My only worry would be overpowering the single 450 watt cab in the small venues. I am inexperienced in this area. I do not want to by the 500 watt amp and regret not getting the 800 watt down the road. Money wasted to buy smaller Amp, only to want bigger one down the road. I also do not want to mix and match different brands. I just want a good solid set up from the get go ! I am also thinking of spending the extra $150.00 extended coverage for the Amp and the 1st Cabinet....just in case of problems or Blow-out, The Warranty (Pro Coverage) does say it covers mishaps at Guitar Center. Am I being wise here....??? Thoughts Please...???