I know it's not necessary but there's some spectrum that keeps things shorter and stockier great for mother's. I believe luxx has one like this but there quite expensive.
I always used t5s with blue bulbs til recently & did Great, plenty of available cuts. Theyre cheap & plentiful.Or find the right led with the blues & run up high above the plants unless you need lots of cuts
Hlg b spec? Could be a good shout, it depends on how fast u wanna be dealing with material though, I used to use blue t5s cos they took ages but stacked tight which was what I needed at that point