HPS/Natural Sun Split time

I ended up getting some seeds and I am about 1/2 through veg. They ended up being Sativa. So they are stretchers and kinda getting big width wise for my 2x2x4 grow box with 150w HPS. I have worked them pretty good so that they are growing within the light spread. Today a funny thing happened. My power was went out around 2 hrs into day of the 12/12 schedule. So they went in front of the screen in direct mid-morning to early afternoon light about 4 hrs and responded well. I live oceanfront so its a clear line. Now in the afternoon my back screen gets direct light. I was wondering once the sun line hits it would it be ok to place one of them out back to finish out the 12 every day since it would have more exposure to most leave sets and the colas. I am in the Sunshine state and that light is pretty good.

Thanks

I forgot to add this has been a short cycle grow since my first grow that went bad and I needed the meds. So they were in 12/12 shortly out of seed. They have been in flower since 4/10.