Running a "turbo cam" grind in an engine without a turbo (while you gather the parts to put the turbo on) won't damage anything, but the performance will be down compared to having a cam that is optimized for what you have (i.e. naturally aspirated).
Would I build it with the turbo cam and drive it N/A till I got the rest of the parts?
If the plan was definite to turbo, then yes.
FWIW, I know quite a few people who have done that with varying makes.
