New Custom board vs Second hand board

ok heres the thing: i have a bic 6'7 and have progressed on this board but i wnat to move on to a glassed shortboard. the thing i needhelp with is whether to get a custom or a second hand board. i know a custom will be better for me because it can cater for my needs but i simply dont have the cash! So i have bee looking in to second hand boards. should i save up longer for the custom or just go for a cheaper second hand board? any advice will be greatly appreciated.