Since you most likely haven’t been jumping for too long, you may end up not liking it. I’d suggest taking a few lessons on schoolmasters. This will help you learn what a perfect/good jump feels like. Also, a trainer will help you with your seat, eq and two point. Once you know that your in love with jumping, look for a cheaper used english saddle. It takes a while to find, but both of my saddles are amazing and I got them for $100. In addition, your trainer or someone experienced in jumping should work with your horse on jumping. Calveletties are always a great place to start. I recommend lunging a jump first, but do what you feel comfortable with. I hope this helps!