Horse Calcification! Any opinions?

I think that so long as you take the vet's advice and not push the horse past her limits that she'd be an okay match for you. I would test her out first though & ask to take her out on a trail if that's what you plan to do with her mostly. She should be a smooth easy ride & close to bomb proof as you wouldn't want her to spook on any trails. I would also recommend hiring your own vet to perform an overall health evaluation of the horse before you buy her.