Just keep in mind the spurt. You don't want to overgrow during the grow period as the stretch phase of flowering can overcrowd badly. Don't be afraid to take out a couple of flower branches if it gets too crowded, though careful arrangement can often avoid this.

And yeah, get rid of the flies, take the plant for a shower, and only use garlic based sprays if you need to do anything through flower. You don't want spray on you smokable.