You are absolutely correct
@Matt ***
. You have little time for a visa from the thai eVisa website. So fly in blind and have the 3 important thing required by immigration
1. ฿20,000 in cash or equivalent
2. Where your staying
3 an onward flight within the 60 days (they haven't decreased it to 30 days.
Maintain your here for tourist purposes as you can't see Thailand in such a short time period
Good luck