I'm planning on buying the Kustom Groove Head (1200 watts) and an avatar 4x10 cab. I now own a fender bxr200 amp combo (15 inch speaker) and an Ibanez sr405 and a fretless pbass. My question is: will the 4x10 and the kustom head have good lows for my 5er? and will I be able to power the BXR and 4x10 thorugh the kustom head? thanks!