Hi, AndaBeer,
You probably don't need all the tools that are used on the videos or in Kuhnhausen's books. They are nice to have and necessary time savers for someone working on guns full time, but for a one-off, using anything like proper parts, a couple of staking tools, a set of good Swiss files, screwdrivers, and a Dremel tool will be about all that would be needed. Watch the Dremel, though. They can be dangerous to precise parts.
A lot depends of the degree of finish work on the frame and parts. Rough castings are cheap, but not practical. Fully finished slide and frame by any good maker should go together with a minimum of effort, and will be properly hardened. Check with the maker to be sure this has been done. If not, you will be faced with either hardening the parts (tricky unless you have the equipment and know-how) or having the gun fail rather quickly.
Jim