Keep it simple.
You could buy one heck of a lot of electric fence gear for the value of a piece of machinery. It won't depreciate much and if it breaks down it won't cost as much to fix.
Spend the remainder of what you would have spent on getting indexes bang up to date, you'd need this anyway.
Then when beef dips, you'll be low cost and better able for the hard times, when beef peaks you'll still be low cost and making more money.
There's more to continuous housing than geting the food to them, you need to get what comes out of them spread which costs. Plus bedding etc.
But, of course there may be other factors for you like field locations etc?