Potassium Sulfate as stand-alone booster?

I have some left over potassium sulfate (0-0-50) used for Dr. Who’s Terpinator formula (works damn good too!). No more than 100g or so. To my understanding, P is primarily used during beginning to mid flowering for increasing bud sites and K is the element that causes increased weight (correct me if I’m wrong please). I’m wanting to make a bloom booster with the left over potassium sulfate since all the other late boosters seem to contain more P than K. I’m not a chemist, nor do I pretend to be lol. Anyone have any tips on how much to mix in a gallon of water and application rates? I’m growing in soil FYI.

PS: If you’re not a chemist either but have had good results using a particular booster, feel free to post it here along with pics if you got them. As always, thanks RIU!

Yes, potassium and sulfur will add weight, resin, terpenes, etc.
1/8 to 1/4 tsp per gallon.