Hello Nightshade.
I do not make shoes or boots but I did read an article recently, about a company that makes custom shoe/boot lasts. I believe the article was in Shop Talk so you might begin looking there.
No idea how many different tools you will need but plenty available. Try Proleptic, the folks that do Shop Talk as they know what is going on. www.proleptic.net should get you started.
Plenty of folks on this site into shoes and boots and sure they will lend a hand.
Good luck.
Ray