Based on the info they will need to gain 1300 - 700 = 600 lbs in 135 days. Roughly over 4 lbs per day which is a pretty hefty goal. You will need to push the feed, but I worry about too much energy and upset rumens. As they age you will need to increase energy and decrease protein to get them finished. AAOK's diet is very good and will add dimension without having the calves go off feed. As the show date approaches consider adding more energy, stabilized rice bran, potatoes, etc. and a buffer to their diet if they seem too green. If they go off feed, get them going again by top dressing brewers malt.