AT this stage its looking like a new build, i have never done a mobo batt....
Advice:
Ryzen 5 1600 - 80$ plus a 30$ credit towards compatible Mobo
Ryzen 3 2200g - 80$ no mobo credit
Will my DDR3 work at all or is it incompatible?
The Ryzen 5 1600 is what I would go for. You will need DDR4.