Hey gents. Serious question here. I'm 27, 6ft even and

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Hey gents. Serious question here.

I'm 27, 6ft even and about 183lbs and looking to develop a decently large physique. I recently got a membership to PF and due to the lack of decent free weights am wondering if one of you guys with TONS more experience could tell me a decent routine for this.

I'm taking creatine before and after workouts. And I'm taking 30mg of protein right when waking up, right after exercise and before bed.

Seriously, I have looked and there's almost no write-ups on decent gym routines for someone that is using machines and not free weights.

What I'm doing now is the this:

Mon through Friday I exercise. I always lead with 30min of cardio on the stair stepper (the kind that is actually a revolving staircase) and I maintain my HR at 151ish the entire time. All exercises are done at the MAX weight I can do and I taper off to complete 3 sets of 5. So I go until I physically can't lift anymore most times.

I do an A then B routine.

Monday, Wednesday and Friday is A. Then Tuesday and Thursday is B.

Set A:
Chest compres then turn around and do it reversed for triceps.
Shoulder press.
Bicep curls.
And maybe like 3 other exercises that work on upper back and chest/biceps.

Set B:
Weighted situps.
The weird machine where you twist your lower body.
Jack hammers.

Any help would be greatly appreciated. I'm not fat but I do have a bit of a tummy and almost no chest definition (like boobies lol).