If you want cattle, you want cattle, and you should go for it.
I went with sheep, as they are much smaller/cheaper, and I can throw them in a dog crate in the back of my Tacoma. Not as hard on fencing, and easier to breed with a ram that I keep than breeding cattle. I do want to eventually raise some cattle on leased ground, but that's years ahead. In the mean time, I wanted something I could breed/raise at my own place. Someone poo-poo'd Corriente on the first page, those are actually pretty popular in my area, and *may* be what I go for. But they are popular for roping.
You mentioned a vet lined up, and they probably will know how to in a pinch, but (and not trying to be an ass, but speaking from personal experience) make sure you have at least a plan for an unexpected death. My big problem was an animal attack taking out most of my flock, which won't be a concern (most likely) with larger animals like cattle. But the folks in my area that handle large animal carcasses had equipment issues, and I had to scramble to get rental equipment to bury them.
Can't speak to the cattle market in my area, much less yours. But on hay, being able to buy on the spot from close by guys trying to empty out barns is helpful. So is being able to trailer your own. Though getting it delivered is very nice, and the closer the guy is, the better. If I buy from feed stores instead of direct from small farmers, there's a big change in price. Big squares in my area are much cheaper than the small squares, and it seems like three strand small squares are a really bad deal. I got stuff to be able to handle the large squares as I can buy from the feed store if I need to, and still come in under private sales of small squares. Less of a concern after you know how much you go through, and can project. I'm still working on having enough storage for a full year's worth, and that probably won't happen for at least a couple years.