Which string would be better for me? (Kitty String Fat or Normal)

I’m getting ready to buy a MYY N12, and I could use some advice for which type of kitty string to get. It seems like fat string is better in general, but I’m worried that it will shorten my sleep time. If it affects it, how much will it affect it by normally? Also, what advantages are there for getting normal string? Also, if I’m still pretty new, should I go with poly or nylon?

Thicker string won’t really have an effect on spin time, unless you’re doing tricks with with 3+ string layers.

The pros of thick string, such as tighter binds, better string tension control, and better slacks far outweigh the negatives of very slightly worse sleep times.