You're on the right track, and the advice given above is all very sound.
I use 2inX4in fencing to keep deer and rodents bigger than squirrels out -haven't had problems from the squirrels or chipmunks though, or mice.
That covers animal pests for me here in the NE US.
As for bugs... well!
Early July, some type of moth lays eggs on my plants, and if I don't hose them down with bacillus thuringensis from concentrate, (liquid version, mixed in water,) I get boring caterpillars.
They are the absolute worst! they dig in, eat the inside of the stalk and crap all over the place, injuring the plant, letting them become susceptible to botrytis mold.
I do the Bt spray once a week, more if it pours on them.
For mold, I use GreenCure, mixed slightly less than they call for to not brown up all of the pistils. We don't smoke pistils anyway, so if they turn brown early... I just think of that as a form of birth control.
Brown pistils can't get preggers from stray pollen, if it's around.
The GC keeps the mold away, but if I see a spot I pluck it out and spritz with H2O2/water and keep an eye on it.
The only thing that stops mold from destroying your crops outside is to grow an early flowering variety that is REALLY resistant. You can get them harvested by early September or late August, and they don't have a chance to get dewy-wet and mold up when it gets cooler.
If you have a strain that finishes later, (like October-November,) you have to spray GC every week, BT alternating. Both are safe for use and I've never tasted a difference.
Others here may be opposed to BT and GC, but to each their own.
One other piece of outdoor advice: Keep a journal, make notes on what the date is, what problems you find, (or don't find!) and next season review it when it's time to think about planting again.
Your own experience will be the very best teacher. Cannabis is decidedly NOT a "set-it-and-forget-it" kind of growing experience.
If you keep a close eye on things, and can head off caterpillars and mold... you're doing OK.
Welcome to the atmosphere hahaha.
It might be good, might be bad.
You'll know after you cut it all for harvest what kind of a season you had.
Make sure they get at LEAST 10 hrs of unfiltered sunlight. You can get by with 8, but more is more here. They love full sun.
Watering in the AM is best; they have water with which to respire and all sorts of energy to pack on big smelly flowers.
Go easy on nutrients, too. Unless you are growing a finicky indoor variety, you just plain don't nee more than good, living soil made with a bunch of compost. Perlite helps keep it from compacting.
Pretty easy, really. I just mix up soil with compost I've made last summer that has been sitting since Fall. Add perlite, regular old garden soil and mix in a *little* vegetable fertilizer. Before planting, bury a dead fish at the bottom of the pot. I use sunfish, aka "bluegills", aka "bream". I leave the old roots from last years grow in that soil, too. It feeds them as well.
Enjoy sitting at the knee of the master, we all have to bow to -nature.