If you like the frame and it fits well, why not put on a 105 group? Questioning what is wrong with the wheel. 10,000 mile on a hub/wheel with just service and maybe a couple truings would not be extremely high mileage. If you find a good used wheel at $75-100, and do your work on eBay and such, you can definitely come in under that number. I would rather refurb a bike which rides well and would otherwise continue to serve my needs than cross my fingers hoping the new one doesn’t leave me wanting. Granted, new bikes do have their draw.