Thinking of modding a Mayflash USB Stick. (First Time :D)

I just bought a Mayflash USB Arcade Stick, I plan on modding it though.
I’m kind of new to modding (Like really new), I’ve searched up stuff and heres all I know:
Dremel 28mm Button holes to 30mm.
Use Sanwa/Seimitsu parts.
Requires Soldering Iron / Desoldering Wire?
A bunch of rewiring (Would I have to check out buying new wires/strap?)

I dont really know what to buy as for Buttons and Stick.
I looked it up and found Sanwa OBSN-30 Buttons and Sanwa JLF.
Anyone have any specifics?