I was going to use "Grow Big Liquid Plant Food" (6-4-4) for vegitive

and then i wanted to use "Roots Organics HP2 (Liquid Bat Guano)"
0-4-0 for budding

but im wondering if i should be useing both durring budding

or doubble the amount of bat guano to get it upto 0-8-0

dose anyone have any advice?