What do you recommend that I do all at the same time?
I use
Roots Organics Buddha Grow/Bloom, but honestly any cannabis-specific regimen should be fine. Fox Farms Grow Big/Big Bloom/Tiger Bloom is something a lot of people use.
She is going to get more sensitive as she flowers so I would just get into the program you will run going forward now. That could be liquid fertilizers or it could just be top-dressing with something. I do not recommend something non-cannabis specific unless you know what you are doing or are under the advice of someone who does (which is totally possible with enough research). I also would ramp up feeding rather than just starting out at full blast but others may have a different opinion on that.
Basically right now she needs more nitrogen, but that need will fade away throughout her flowering period. At that point she will need more phosphorous and potassium (while still needing some nitrogen, just much less than before).
There are a lot of resources here to research through as you are figuring this out, including a lot of people who know a lot more than me about this.