SANDING is the hardest part of completeing the "kit"
It isn't really hard, just tedious, and the quality of the sanding you do reflects on the finish you get.
I did have a bit of bother with the string grooves, but this was only the second bow I had worked on.
On a personal opinion, I though the tip overlays on mine should have been thicker. If I do this again, I will use some red, or black phenolic under the wood to build my overlays up a bit.
For a finish, I used ten coats of "Minwax" spray on poly, (gloss) and five coats of "Minwax" spray on poly, satin. These are THIN coats, too, and I sanded after each coat had FULLY dried. (600 grit)
A thin strip of leather was glued to the arrow shelf, and a another to the side of the arrow pass, just to keep things quiet.
If you are uncomfortable wtih putting on tip and grip overlays, Mike will do that, too, for a nominal fee, but it isn't really difficult.