Should I use this boar?

I have a couple gilts that I bought for cousins to start there 4-H project. I am helping them along. It has been awhile since I have raised pigs and a lot has changed since I have done it.

I have the opportunity to purchase a young boar of my buddies, sired out of Big Stick. I would like to use him but I have one gilt sired by Big Stick as well. The other is sired by Big Bucks. My question is, would be ok to breed these gilts to this boar?

Thank you advance. [b]