Where are you located? Testing your feedstuffs might allow you to NOT have to use pellets. By pellets, I hope you mean something of

substantial size or they will disappear in the ground, not in the cow's belly. Hopefully your nutritionist will do a cost analysis and is an INDEPENDENT nutritionist, not affiliated with a company selling feed. In many instances a bit more hay is much cheaper to feed than buying cake, plus if you are already set up to feed hay that helps too, with not buying more equipment.

Texan had some very worthwhile comments; BMR had some great questions. Water is the most important nutrient. Without enough water, cattle can't perform as you would like or as you have figured on.

Good luck! Keep us posted.