id personally buy the whole FF line up.....because you have really only parts of the feeding schedule.....

The grow big is for Veg......and works very well with the big bloom......The Cha Ching is for the very final stages of bloom and works with the other two nute grow big and big bloom, but you are going to need the tiger bloom or some other bloom nute in the beginning stages of bloom....

The open seseme and bestie blooms arent really needed but they help with the transitional periods between veg and bloom....and the bestie bloom will completely control the height of the plants from the first feeding...

I really dont know what else is your problem......any questions i can answer id be happy too.....the problem is that i dont have any experience with not running all the FF nutes or someother complete nute line like AN sensi, GH lucas Formula. These i feel i can give great advice with these nute complet lineup, but if your not going to use the complete nute lineups....i really have limited advice because im not the best at creating my own nute formulas based on problems which might present themselves....

Please state specific problems you are having and i will answer them to my best ability!