MagicTricks.com says:
These flowers would fit inside a long shirt sleeve.
However, a buttoned cuff on the sleeve would be too tight to pull the bouquet though.
So just make sure you find a looser way to fasten the cuffs on the sleeves.
And yes, since these are cloth flowers, they should hold up to rehearsals and multiple performances.
We would recommend that they be stored together loosely in a box between uses, to keep them safe.
We know how hectic stage shows can be, and props can easily be damaged by mistake. :-)