If you really want to check out some bloom boost based products, I hope to not get slammed for saying this, but check out,
nectar for the gods - they are an organic calcium based line of nutrients. I met he owner of the company. He was very honest about the cannabis nutrient business, he even let me sample their products. Possibly you can check their site and send him an email with what your wanting to do, it's worth a shot man, and maybe he will do the same for you. Dudes real nice and honest.
From my experience, all their nutrients are great, and give you the option to make certain mixes.
What I wanted to mention the most, is their "bloom khaos". When used as a foliar spray/feed throughout veg and the first two weeks of flower setting, I have noticed a 100% in increase in nodal development.
After two weeks you can water this stuff in, and it is a nutrient accumulator/facilitator/driver and helps the plant be able to actively draw in more nutrients. Helps with swelling for sure.
They also have a few more calcium sources phosophorus based products, a nice worm casting/seabird guano tea, and a carbon forumul that helps with the photosynthesis and the breaking down of sugars in the leaves. Also a nice fishbone meal that helps with asthetics, look, feel, taste and smell.
I'm not saying for you to go out and buy anything, I'm just sharing my experience.
I prefer making my own re-amended living soil, but I have enjoyed growing with these nutrients up until now with great results, both on medical cannabis and organic fruit and vegetable plants.