To be perfectly honest, if you can't be profitable with a $15k account then it's very unlikely you will be with $300k.Not nearly enough risk capital to truly trade the size and method that I want.
$15-30k accounts aren't that bad but I'd much rather (obviously) have $300k to risk instead. Maybe this means I'll just lose more money but I doubt it, I've been net net positive since I really quantified my strategy and positionsize/risk management metrics.