You are marginal. OK for wakeboard, wakeskate, tubes. Slalom may be tough, depending upon weight of skier and type of ski.
You are at the very entry level of the watersports market. I would suggest you borrow gear and try it out. If you buy a wakeboard, go up one size level from the mfgr rec for easier pulls.
Good Luck and have fun on the water. In a few years you will probably be looking for a used inboard.