I grow indoors with limited vertical height, so my use of veg fertilizer is rather limited. If you are growing in a space with limited vertical height (4 feet or loess grow height), I don't think you should worry too much about it. Just about any liquid fretilizer will do the trick: FoxFarm, Ionic, General Hydroponics, etc. You just want to make sure you use something you are comfortable with. Don't be afraid of the water soluble ferts and leaving the soil neutral.

I grow in a Waterfarm now and I don't have to worry about stuff like soil composition and aeration and the like.

Good luck!