I was wondering if I can move a hull that I've stitched up but haven't yet glued?

Move at will; the stitched hull hardly weighs anything. With so little mass it's hard to damage the structure. Just make sure to check that nothing's twisted or awry before you mix glue to afix everything in place forever.

We have stitched-but-not-glued hulls hanging around the shop here that have been moved, oh, two thousand times.