Jum I used to work there, i was based in BQN. Is pretty much like all 135 ops. Is a good experience if you are looking turbine time. Do not expect more than 45 hours a month. Training it was the worst that I ever had, technically you are alone in a trailer self studying and all doubts try to solve them by youtube or google. Never i had someone to explain any doubts. Training or me was in house but since the accident in SXM where I lost my two friends i heard they gonna be sending all crew to flight safety, but that comes with a 2 years contract, that is ridicolous. They have cass so you can jumpseat with airlines, but not to many days off. I commuted from MCO and basically i was home for 24 hours.
If you can get something else besides skyway I suggest you to get it. If not just build a little be turboprop time and send your apllication to ACC or MN aviation if you want to be base in Puerto Rico.
Good luck