RE: Am I asking too much?
No, you are not asking too much. Especially with the scope that's on it!
As to whether the .270 WSM will be around long, for a handloader, that is of no consequence at all. If one suspects that a currently available round will soon be off the market, all one need do is buy a thousand empty, new cases right now! Otrherwise one might end up having to neck down the .300WSM or the 7mmWMS to get brass. Gee, that's hard!!