TP was just used as an example of a big damage spell, but I have no idea if it can crit haha.
Macroing /sit isn't a huge issue depending on which spells you choose to keybind. I had an MX518 and found that I had enough keybinds for all my important spells, but recently switched over to an MMO mouse (with like 15 buttons on the side) just so I could have some spare buttons for those random spells/macros/etc.