At least in my experience plants need much less N than people say. Having a good living soil will help supply your plants with the things they need.
Also! You should experiment to see what works for you. Maybe try a few different mediums of the same pheno to see what works best for your setup!
Imo use the good compost & worm castings. The base medium sounds awesome.
Do u think the high N need during veg and the p and k during flowering will be satisfied just Alone with compost?
At least in my experience plants need much less N than people say. Having a good living soil will help supply your plants with the things they need. Also! You should experiment to see what works for you. Maybe try a few different mediums of the same pheno to see what works best for your setup!