how to compile for a woodpecker cnc board

[Cabinfourus]

I am trying to eliminate the Z axis on my laser engraver. I want to use my limit switches but I can't since grbl wants the z axis to home first but I don't have a z axis. I want to change the homing cycle to x and y only. I am using IDE to compile grbl 1.1h but I am not sure which board I should define in grbl. it has an atmega 328p cpu but it is the woodpecker cnc https://www.amazon.com/gp/product/B07S2R59N6/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1

Which board should I define and how would I retrieve the hex file from IDE?