I’m training as a nursing assistant at a hospital, which shift should I do?

I started training at the end of August but started on the floor I’m going to be working at two weeks ago. I have been shadowing someone who works 2 12’s and 1 8 hour shift - total of 32 hours per week. Her 12 hour shifts are 11am-11:30pm, then her 8 hour shift is 3pm-11pm and I just want to say they are brutal. I wonder if a different 12 hour shift like 7pm-7am is better? I don’t mind 12 hours but 11-11 sounds longer.

I also want to work weekends & nights because they pay extra. I’m hesitating because my bf works during the week and have weekends off and I probably won’t see him as much as I want (I know I shouldn’t base my schedule off his but still!!). I’m planning on working Fri-Sun 12 hours shift each, (or 2 12’s and 1 8 then maybe pick up one 4 hour shift when I feel like it).

Would love some input! Thanks :)