I wouldn't suggets doing both. Jumping and barrel racing can be so hard on a horse's body. They require your horse to do two completely different things, both equally hard and it's going to wear your mare down fast. I used to compete in hunter/jumper and do occasional game shows to barrel race. But I have seen people compete in both and the wear and tear on your horse is just not worth it..
Count My Strides - Shane, Bought 2-18-06, Mustang.
"I whispered to my horse, "i'm afraid of falling" and he whispered back, "i have wings".