Go back to mag amp and plant amp. The reason your ph was always off is because with cutting edge you are supposed add all of your nutrients *except plant amp, then PH it. Once your nutrients are ph'd where you want it *Then add plant amp and do not adjust the PH.
Plant amp has a low molecular bond that gives a false ph reading. you get what i'm saying? Look for yourself on cutting edge's website under plant amp.
Besides that you should be fine. ! I wouldn't use bontanicare cal/mag use cutting edge, CE's plant amp and mag amp are in a more broken down and readily available form (IMO).
PS. don't be nervous do just like i said. Mix all nutrients *except Plant amp, then ph to 6-6.5. After you have Ph'd *add plant amp and do not adjust ph just go ahead and water.!