Dr R, it seems your worried about sunburn, jus be reasonable an gradually over about 4-6 days let em reach full light tolerance. Partly cloudy to cloudy days are nice to work with, in bringin em along. One definate thing to do tho, if you dont already employ it, is to get a small fan an place it in proximity to the plants, so that it gently blows across em, all the time (or most of the time). This will give you a stockier plant, provided lighting needs are met. You can use any old computer PS fan, and a small plug-in transformer, to cover a fairly large area, maybe 2' x 5' long.
Good Luck an Best wishes...