Originally Posted by NeGourmand

Plastiq won’t let you send yourself, or a business controlled by you, a check. Unfortunately. They won’t do person-to-person either.
If you can figure a way out to get the check, it otherwise sounds like a good plan. One thing to keep in mind is that 3% card has a tendency to stop giving 3%back without warning, however (e.g., GCM, GC.com)