Jason,
I just read your marketing plan..sounds good, there's some things I learned over time that may help if you can realize them early.
I have been there and am still doing this. The thing on the calves is generally you turn your money quicker. I calve these cows and look at pairs vs calf prices. I think, well, I will wean the calf and make more. Then I look at fats vs weaned calves and will think I can do better feeding calves out. Turns it into a 18 month proposition for me and generally I do make more. But it turns into a cash flow management deal I have to be vigilant on.
Here's the thing. Market these cattle. You will soon realize, some of these calves aren't going to gain. Sell them as roping calves in the spring, dry the cow up and sell her on the May/June Fat Cow market. On the rest, get ready to bunch like calves. If you can sell them in bunches of 7 or more, you will get more. On the ones that don't fit large bunches, private sale them to Backyarders looking to raise a Locker Beef. Same applies if you are selling Pairs. Bunch Similar cows and calvs according to Size, Age and Breed. When you buy thee cows, think of it in terms of the final marketing.
Think of these cows in terms of cost per pound to. You will salvage the cow soon. If I pay $650 on a 1000 pound bred cow, I am into her 65 cents a pound when I go to sell her as a butcher cow. If I do the same on a 1300 pound cow, I am into her at 50 cents per pound. Don't go extreme, you will feed more. And a good 1000 pound cow beats a poor 1300 pound cow anyday. But if you can get some good framy bred cows that will raise great calves and you can add condition to, you might need to find a bank with a larger vault, LOL
I haven't needed to yet, LOL
Good Luck! You will develop an eye for all of this,
PPRM