You should focus on scuba in Thailand if you do scuba or sightseeing. That place has been closed for almost a year.
There is another place to jump though up north but only cessna 172 for $49 a pop to 10k (mssg me if you want someone to jump with I'll join ya if you do decide to jump there...they're looking to get a caravan not sure when). Funny as it seems like so many people are coming to Thailand in April that I know and many Asian jumpers are going to Cali or Australia.