I have done the full custom thing with one of the UK's most respected builders. Would I do it again? No. The bass was all I asked for spec wise but it just did not sound fabulous. I changed electrics twice but to no avail. As above, I sold it for a loss. You just cannot tell how wood is going to work together. It might work, but it might not. If you still want to (and I am not saying do not) then I suggest you pick up a model from your favoured builder 2nd hand (they all come through here), live with it for a bit and then move on from there, selling it for the same as you bought it.