fert question

hey guys im doing a soil grow in fox farms soil. the plizzes are 3 weeks old and are going to be ready for flowering in like 2 weeks. i havent gave them any ferts at all but want to start a feeding program. i would like suggestions on what and how to use as they will be flowering shortly. i was thinking of using fox farm liquid soil ferts and starting with big bloom till flowering then give them the big bloom and tiger bloom once flowering. but the contents seem very low on the big bloom (.01-.3-.7) almost like they wont do anything without being used in conjunction with something else. so should i use the grow big stuff also till flower?? (12-7-7) or should i just introduce the big bloom till flower then use that and the tiger bloom???

or should i do something totally different??

help please any help/suggestions would be greatly appreciated

heres a link to all 3 of the ferts i talked about

also the strain is endless sky from Dr. Greenthumb

Well as for foxfarm I use it and just go with the feed sch but only use half of what they call for and am going to start using the soluibals come next flower...have found at full strength it just burns the plants I have....hope this helps....for the feeding sch just go to foxfarm web sight

was also thinking of using the solubles but they seem astronically strong?? the feeding schedule is open sesame(5-45-19), beastie bloomz(0-50-30), cha ching(9-50-10) would this be my better option to use this a little diluted from what they recomend since it says to start feeding this in week 4

The thing I have learned is it a lot easer to go up in fert amt...plus each plant reacts diffrent to them. So my theroy is start light and see how it responds...I almost cooked 2 of my plants in flower.....but a good flush saved them but lost a lot of production.