Different genetics have different growth structure. If the roots can get out into the surrounding soil and you take care of them well, they will definitely get over the fence. If you train them to spread out, they might still finish over the fence, but they'll be way wider.
Some older leaves will turn yellow and die. Feed according to feed schedule, but consider the size of pot the roots would be filling, and up the volume of feed mix you are applying accordingly.
Be concerned about all the bug pests. You should do weekly preventative maintenance. Once an infestation takes hold, it can mess things up quick. The plants are exposed to way more pests outside than inside. I'm sure you pay close attention and check them like 10 times a day, but just to reiterate, check under leaves for bugs, caterpillars, and mites. I use neem oil, spinosad, and bt on foliar and root drench. Do not foliar spray those after flower starts.
Good luck! Peace
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