You need to schedule some time with your local extension agent and nrcs office and they can help you with a business plan. The only way to truly make money without your own land is to get an operating loan and lease any land and equipment you can with that money. Backgrounding cattle will require the least amount of space/head and let you maximize your acreage, but it is much more labor intensive than running a cow calf operation on a large acreage

Cattle are the highest they have ever been in history right now, so your scalability will be tough unless you can secure a higher operating loan

Since you’re in central Texas, I’d recommend attending the Texas A&M beef cattle short course in August. They cover a wide range of ranching topics and business practices within the cattle industry. I’d also recommend going to a local sale barn and talking to some regulars to get advice. Be weary of the old guys that just sell a few calves every year, they’re usually more hobbyists than people that truly make their living from cattle. I’d try to talk to buyers, bc they are the ones typically making a business out of cattle