Start offering sets for sale through group buy.
Order the boards.
Secure and prep all packaging.
Desolder all switches, sorting into batches as I go.
QC all switches one by one (check pins, check desoldering).
Pack switches for shipping.
There is some overlap in the list above. For example, I'll order the boards while the group is still open. I will do whatever I can to make the process as efficient as possible.