First thing you need to do is find another taxidermist that IS open on weekends if you don't have the ability to freeze the hide immediately. Tough to guess on the price, it's all dependent on quality and the person doing the work. Expect at least $350 for the shoulder mount and another $60 for the back skin to be tanned. These would be the lowest I would expect. Don't be surprised if it's more. No way for anybody to guess on how much to process the meat. That depends on what you want. You need to ask the people you'll be having do the work. All we can do is guess.