Fastberry 1st try

I started germinating Fast Buds - Fastberry x 3 and Royal Queen Seeds - Diesel Auto x 1 on 5 June and as of 8 June, only 2 Fastberry are in soil and have popped their heads out. This grow is different as I'm going to be using Jiffy pots for starting them instead of putting them in their final pots once they sprout. I have seen it done (transplant) with Auto's so I'm hopeful. I am a little confused on what my PH level should be as people have been running between 5.7 and 6.7 for FB strains. I am shooting for around 6.2 PH. I am running Fox Farm Coco Loco soil in 5 gallon air pots. Any help would be greatly appreciated. 10 June: Well it will be Day 2 and all seems well so far, haha. I have 1 more Fastberry and a RQS Diesel Auto still in soil trying to germ. 11 June: Gave all 4 young ladies a root drench with Mykos WP.