You might think about using one of the calving ease Charolais bulls on the market today. WR Wrangler will throw some cool show calves if that is the route you want to go. If it were me, I would use LT Ledger. He is the most popular bull on the market right now and believe me he is the real deal I have seen him in person. We have had multiple purebred calves out of him and they have all been in the 70's and low 80's. If your heifers have some decent frame, I would not be worried about this bull at all. LT Long Distance is promoted as a better calving ease bull, but Ledger is in all reality the better bull for both calving ease and growth.