I barely know how to spell SQL, so I'm curious if you're an experienced programmer and are merely ("merely") porting your skills to C/Lua/Pulp are nbd or if you're a newbie to it all (and are now an inspiration to us newbies who want to develop for the Playdate)?
I've been programming for most of my life, and develop games on the side (mostly Unity over the last 8ish years, though that may change soon). Lua is a bit odd in some ways and I did have to learn how to structure my code (honestly the code for this is pretty rough right now), but generally once you're comfortable with 2 languages, it's not too difficult to learn another.
Pulp is a great way to dip your toes in development! It's a bit limiting unless you do a bit of coding, but I'd recommend it as a starting point if you don't have any experience! Just play around with it and set some simple goals on what you want to make. Your perception of "simple" in gamedev terms will change quickly, but it's a lot of fun!