Sounds like a totally do-able plan to me. I wish you all the best. Our chosen tip would be to buy a well designed hull
that will be strong and sail well then do all the work
getting it ready and safe yourself. Everything that needs work contributes to you getting it for a good price
and also contributes to you having faith in your boat
when it matters. Best example new rigging
chosen and fitted by you is worth it's weight in gold. All the best with your choices. There's loads of brilliant opportunities out there for you!