just need a little advice of wat boosters to add to help my plants

im growing blue cheese from seed im into the 3rd week floweing and i use bio grow bio bloom top max and black strap molasses and on the 5th to 6th week im going to use pk 13 14 does any1 no or can recommend a good booster to add to my nutes that im using to increase bud size or thc and could you tell me wat the boosters does that your recommending

just to add im growing in soil

PK13/14 is a bloom booster brohym
You got all you need right there. You cant supplement a rise in thc, that will come from your growing practice and the plants growing environment, ultimately.
You COULD add a little superthrive, or an ezyme concentrate like Hygrozyme, and/or some beneficial microbes. But you essentially have all you need now to grow a good batch of herb. The more crap you add to your feeding mix, the more the likely hood of fucking shit up. So dont over kill your plants, if you havent tried a product before, dont trust it and add it in to your regimen slowly.
You probably SHOULD add some cal/mag or epsom salt and use tell a few weeks before harvest, but other than that you got it covered.
Here ill break it down: your base fertilizer is covered with the bio bloom, the PK 13/14 is your bloom booster, the molasses will feed your soil microbes which will help your plant take in the fertilizers, and epsom salt or cal/mag will ward off a mag deff which will be evident from yellowing leaves and developed spots from the concentrate of using all those nutrients.

Another thing you could do is: Talk to your plants, play them relaxing music, and stay in a good mood when your around them.
I swear to god once I was growing a batch of closet herb and about 4 weeks into flowering my chick cheated on me and broke my heart. Long story short, I fell into a deep depression and my plant began to droop, I couldnt figure out what was going on with my plant, but didnt really care either because I was so depressed. Then 2 weeks before harvest, I met a hot rebound girl and perked back up and oddly my plant lost its drooped and perked up like the energizer bunny on coke
They really have proven that plants react to human stimuli and if you abuse them, they wont like you, haha, I swear!
So give them a an environment you would be comfortable hanging out in, give them food, and dont be a dick to them and they will reward you with nice, fat, stinky, nugs!
Lol, maybe im crazy but I like to put my plants in the dark for a few days before I give em the chop, I figured its probably nice-er to harvest them in their sleep and not when they are awake

thanks for the useful info i went out and bought some bloombastic i was told it works good with bio bizz have you ever used this before and could you tell me ur experience on using this booster because i dnt no much about it thank you green chile