Not sure I'd want to give the ladies that much nitrogen this deep into flower, but if you start off at half or quarter strength, may be ok. Numbers that high will easily burn.
Also, I have heard that too much nitrogen during flower can stress to the point of the ladies either wanting to revert back to veg, or possible formation of pollen sacks.
I use Fox Farm Tiger Bloom which is 2-8-4, I think. Works fine.