I Have Dolphin Emulator On My Laptop And I Was Wondering If It Were To Be A Good Idea To Do Runs On Dolphin Instead Of My PAL PS2. For When I Get 1:50 Or Below

I recommend dolphin

Dolphin emulator is far faster than PlayStation 2. As far as PAL goes it doesn't matter what region the game is. There is no currently known difference in strats based upon region.

Dolphin would be a better idea considering you can practice with savestates before and between runs