Yes I do run veggies. I mainly go for tomatoes and peppers. This is the first year I'm doing cucumbers and peas indoors. It's mainly for salsa, as I love it way too much. Cilantro, onions, avacado and super hot peppers I usually will just buy when I need them. Pretty cheap all except the avacado.
The lights run at 20/4 for right now because of the autoflowers, but when they're done, I'll drop it to 18/6. I prefer to use 7000k MH for the veg portion and flip on the 2 led boosters (630, 660 only) when the plants need some extra reds.
My plantmax bulb has some pretty good reds in it so the boosters will excentuate that end of the spectrum. Basically it's like having a dual arc bulb. All my produce veggies are indeterminate and grow while they produce fruit so a full spectrum is best imho.
As far as lumens, I'd say 60,000 is probably a good start and as low as I'd go. Light is energy, you can't have too much. Well within reason of course.