Hello and welcome,
Looks like you've got a good starting place there. That cab should work for a basic street fighter layout.
One option may be to take the existing metal control panel, fill the holes and fix the dings and redrill it or you can start from scratch.
Check out slagcoin.com and you can print out layout templates and see how they fit.
Not exactly sure what kinda answers you're looking for on equipment. But you have a lot of options.
You can use Ultimarc Ultrastiks and connect the buttons right to them or you can use regular joysticks and buttons along with an encoder.
The vendors to check out include Ultimarc, Groovy Game Gear, Paradise Arcade and Focus Attack. There's also arcadeemulator.net.
Popular encoder include the ipac (ultimarc), keywiz (Ggg) as well as lots of others.
When choosing your controls, be wise and think about your main games you plan to play.
Popular sticks and buttons include Happ/IL, sanwa, seimitsu, zippyy and others. Groovy Game Gear has a good assortment of joysticks.