Can 30+ year olds get through selection?
Absolutely, as long as you are trained up to the old grad standards prior to your arrival and focus on your recovery throughout the course you will be able to pass. In fact, the older candidates are the least likely to quit.
Would I still be eligible to be a PJ at 38 yrs old as long as I meet physical requirements?
Yes, we have had some guys who were that age come through. Also most things can be waivered.