Recently started interning for a company and just hit their gym yesterday(I've been going to the gym for a while, just first time going to their gym). It sucks. There's free weights, bench, shoulder press machine, and a lot of cardio machines. I don't intend on doing too much cardio and am looking for a workout mainly for the upper body (I have lower body figured out).

I normally do isolated bicep curls with an inclined pad under my triceps so I don't shrug my shoulders but that's not an option so I was looking for a substitute.

I was thinking of wide gripping on bench to help with chest and gripping hands closer together to work on triceps. I know skullcrushers is another workout for isolated triceps but wanted to hear options as I normally do tricep extensions when there's a cable.

I'm at a complete loss for what to do with back here.

Thanks for the help