These are great tips…
When I read, I prefer 3rd person/past tense. When I write, it is totally different!
That being said, if I switch to past tense do I stick with first person or is it best to go with third person?
Definitely third person, past tense. I don’t see how you could have 1st person past tense. I’m going out on a limb and saying it doesn’t exist. Much more experienced writers here to confirm or deny.