You don't need jabs, unless you plan on living in the jungle for months.
If it's a punting holiday spend most of your time in Patts. 3k a day is very low, what about accommodation? If you only eat western food you will pay more, in many popular gogo bars a bottle of water will be similar price to a beer, you may be able to barfine a beerbar girl LT for 1,500b plus BF 500, but some girls now insist on 2k, gogo girls can be expensive, and if it's your first visit they will probably hustle and chew you up, looking at 2k to 3k LT.
You say you're a DJ, so you will probably spend late nights in the clubs of Pattaya, drinks can be expensive, buy a bottle, but you will find some of the hottest girls in Patts, many sponsored up, and gogo dancers finished work will go to Insomnia.