How does this budget look? My goal is to be financially stable and set myself up for success any tips?

I’m current E-1 Active duty in tech school. I get paid Mid month $709.75 and end of month $764.96 this is after my 15% TSP deductions.

My bills include

-Phone: $110

-internet at home: $90

-Crunchyroll: $15

-haircut $60 a month($30 Twice a month)

These are my set expenses that are undisputed all the other ones can be adjusted like food, personal care, vending machines, etc.

Savings

-HYSA: $736 per month( Can be tweaked a little but saving for a car)

-ROTH IRA: I’m not sure yet. Any advice?

-TSP: 15% $288(already deducted)

My main question is how does this look so far and how much would you suggest I put into a Roth IRA and still have fun money to eat out and buy stuff I want when I want. Any tips or general advice so I don’t mess up? I do graduate soon and I’ll be stationed in Vegas.