I run cows year round, but buy an additional 30 stocker calves every summer. I buy mid 4 to mid 5 weight calves in May and tend to sell October. Everyone talks about 2lb daily gains. Last year in southern OK with all the grass they could eat but no additional feed, mine gained 1.3 lbs a day. This year I'm going straight back to the sale barn with them in October, so I implanted them and changed mineral. On a good mineral program with implants, I'm hoping for 1.5 to 1.7 lb average daily gain. Steers convert feed better than heifers and will gain weight better. They all went through a vaccination regimen immediately on receiving. Based on those numbers you can estimate your potential if the market holds steady. Look at valley vet to estimate your cost on supplies you decide on.