If you really think you might want to jump, you should probably consider getting an All Purpose saddle rather than the dressage saddle. You can do really low jumps in a dressage saddle, but probably nothing more. But it's going to put your leg in a position you're not used to. See if you can find some to try to see what it feels like.
"Saddle fit -- it's a no brainer!"" - random person