I agree about the mesquite. Remember, mesquite is used alot in Texas and Oklahoma on big open pits and stickburners that aren't so airtight. mesquite is very good if you can get a subtle smoke with it. Sometimes hard to accomplish with it in a Smokette. Try 1 chunk with a big pork butt and then if you think you need 2 next time, so be it. Definitely an excellent wood to season with.
Good luck, congrats on your wise purchase, welcome to the forum !