Are you using both of those or what?
When you transition into flower, after the stretch, it will be better to drop the amount of N and raise the P and K a little bit.
As far as bugs, without you knowing what kind of bugs you have, it's hard to help.
Myself, I sprinkle Sevin all around where I have my pots, kinda thinking the bugs won't crawl through it.
I had a couple crawly things, mealyworms I think they were, and sprinkled some on my plant.
It's safe for veggies and edibles, so I figure it's OK.