If you want to cut your own lams you need a good table or re-saw bandsaw and a finely adjustable (.01") drum or surface sander. Personally, that's 'way more work than I want to do; and 'way more money than I want to spend. I'd have to cut thousands of lams to "buy back" (justify) the cost of the necessary saw and sander(s).
You can buy any lams you want or can dream up -- there are a number of good guys here and elsewhere cutting lams from exotic and common woods and selling them for pretty darn reasonable prices.
Lams in hand, all you need is a form cut from a 2x10, a bunch of bicycle innertube rubberbands, a beltsander, some sanding blocks and assorted handtools like roundfiles, scrapers, etc.
Heck I build flatbows with a straight piece of 2x4 wrapped in cling-wrap and masking tape, and spiral wrapped cord to hold things together while the glue dries. Total cost of form under $10. I use a 3x18" beltsander unside down or sideways to
Air pressure forms and bow ovens are again unnecessary expenses if you're just getting started. The epoxy dries in 24 hours without an oven (are you really in such a hurry?). People built wood-glass composite bows for 30 years or more without a compressor, airhose and two piece forms.
MY advice? Build a dozen or twenty bows simply and easily and then decide what will make your new hobby easier.
Neo-Scythian Form:
Bendy Handle Flatbow and 2x2 form: