in soil
id run it the same from start to finish
if you wanted to add something to your mix id find something with numbers like this 0-10-10
anything that has no N and lots of p/k for late bloom....and no magnesium, your base fertilizer and part B are both rich in Mg which is good, but you don't need more
but it really depends on your soil and whats in it to start
if your starting soil mix is already rich in N you could just feed the mix I suggested from start to finish
if your re-using the soil and not amending it you could need more N during veg so it really just depends
but it would be pretty easy to get a little extra N if you do need it during veg with guano, fish, earth worm castings, or something like that
so again, id plan to mix it the way I suggest for the entire grow
if she asks for more N during veg get a good N source like high N guano or liquid fish
later in bloom it would be nice to boost the P/K slightly if you had a bottle that had only P&K in it