I would not be paying that kind of money, different or not...
I would buy the AAS front (buy 2, just in case/other designs), some fiberglass and resin, anything else you would need, and work on it myself... even with no experience, it would be a hell of a lot cheaper and more satisfying/rewarding to DIY...
may take more time, but if you want something done right and cheaper...
you've got to DIY!!
good luck!
I've seen your progress, and its impressive to say the least!
Nice Job!