Looking to purchase a wakeboard and bindings for our kids. They have wakeboarded a couple times and can water ski well. Our son is 80lbs and daughter is 65lbs. I'd like to purchase something decent like a Hyperlite but I'm wondering if its worth it for something they're going to grow out of in a couple years and then need a bigger board. From what I've read a 119 would be a good size but I'm guessing our son will out grow that in a year or two. Any thoughts or suggestions? Thanks.