I use ffof and happy frog, for my seedlings I take the peat pellet that I started in and up pot to one gal ( happy frog and ffof at 1:1/2 ratio ) because ffhf has a lot of peat, then 3/4 weeks up pot to five gal of ffof because it has a lot of kelp. I do this because someone recemended it to. And it worked great for me, they probably knew what they were talking about I'm just repeating it. Anyway that's what I do and it works for me.
So I've been useing this method for three years, and I think at this point you don't need liquid nutes ,but you might want to scratch in a little dolemite lime. You could try it on one to see if it likes it . Ohh and when you do start to feed with liquid nutes go easy at first 1/4 strength and slow ramp up, if your real aggressive with the nutes to early it will not help in long run. With the ffof you might never need full strength , its already loaded with goodies. Good luck happy growing bla bla bla lol. I love ffof btw.
That is a cool avatar what's it from.