Re: Throne suggestions?
Solid and back support and being cheap and light are mutually exclusive in throne world. All of the manufacturers make good solid throne with optional back support. But a new Roc n soc will cost you upwards of $125 just for the throne before the back support piece is added. Spindle height adjustment is the only way to go, and that means it'll be the heaviest piece of hardware you carry - but it'll be worth it as you will be able to play comfortably, and it's also supporting the heaviest part of the kit - YOU.
Save up some more cash and do it right, then you only do it once.