Hello,
43 degrees whoo warm.😊 if you gradually bring them out and adjust them to the heat they'll hopefully do good. The bigger the pot the better outdoors, it'll take longer for the water to evaporate out.
For the clones, as long as they have several branches at least 4 inches long you should be able to clone easily, all the way up to a few weeks before harvest, but i think vegetative clones are best and easiest. You won't have to go through the strange revegging growth. I like using rooting powder and peat pellets.
Topping you'll want to wait for several sets of true leaves, same with a fim. But LST can be started much earlier. I would also definitely use defoliation at least a lollipop and maybe some leaves here and there on the top.
Good luck with the outdoor battle. ✌️