hey guys new to the form and new owner of a 05 gt rx8, just purchased havent picked it up yet, want to make sure everything is fine before i do so, so with that said, ive been reading the stickies and will be getting some checkups done

make sure i have latest pcm flash and recalls
change spark plugs
compression test

is there anything else i can do before i pick up my baby? the car has 98k on it right now so most likely the previous owner did or didn't premix, if the test passes i can start premixing? would that be okay? what if it fails, what happens then?

im still reading the forms so please dont judge my noobiness your feedback would be muchappreciated thanks guys