I think they will be fine, given the chemicals and UV radiation tyres designed to resist while on the road. Being in a garage on the bike won't affect them to much, as long as they were correctly inflated. I have an old tyre on a BMW metric rim that is too good to chuck, but no one wants due to the size, that I'd put on a car tomorrow with no qualms, it still looks perfect.
However, I wouldn't think they will last a year, you will wear them out through riding, won't you?
Congratulations on the pass!