Greenleaf Out of Bud Explosion Until January

First grow with Greenleaf after using H&G nutes. I'm using MC and SeaK in Veg and I'm going to flip within a couple of weeks.

I wanted to use Bud Explosion during flower, but I'm out of luck, at least until "sometime in January". Very helpful Greenleaf.

I'm thinking about using some of H&G's nutrient products in conjunction with the MC and SeaK during flower: BudXL, Hydroplex, MOAB and possibly Sweet.
Of course I will introduce the flower nutes in a measured way.

Let me know if that sounds reasonable or if I am looking at potential catastrophe.
Plants are very healthy so far.

Grow:
Gorilla Grow 3X3 Tent
4 white widows in 3 gallon airpots
CocoLoco
Mainlined. Topped 3x.
310 LEC
MC and SeaK

personally I dont think you need it using the 1 part- not to sure about the 2 part product, but you can use any boost product......