Since you have all the appropriate fixed wing ratings you will have an initial flight and instrument currency check with an instructor and then after that it will be mostly on you to build the time. Skywarrior tries to pair you up with other RTP students building time so you generally fly with the same people.

PSA should cover all the flying expenses, though you would be on the hook for your room and board.

I've talked with guys who built your required time in 1-2 months. It's a lot of flying but you have nothing but time when your down here.