Hmmm.. tbh I like your mix (I'm using happy frog too

) but might I suggest adding in some CalMag and try balancing out the pH around 5.6ish. I feel like the only bad thing about pre-bottled fertilizers are the salt build ups and the fact that is destroys beneficial organisms in the soil.
But that's what I've been thinking, I could be wrong. I've been making my own compost tea mix and mah babies are luhvin' it
Lars