3-in-1 grow tent exploration

I grow outside my grow tent. like I always put my starters under a light just to the left of the tent. So that's about the best "from experience" perspective I can give you.. Light leaks are full blown really misunderstood.. You want total darkness for Mushrooms.. For Cannabis.. having micro amounts of light during dark periods won't affect the grow.. Iv'e used cheaper tents on plenty of grows and messed around with flowering times and what makes plants flower and stress and reveg.. And there is a whole lot of bad information on the internet. Keep in mind the moon can be quite bright numerous times throughout a outdoor grow but the amount of light is what messes with the plant more then anything.. So I would assume 3 in 1 grow tents are A-OK.. Just some considerations would need to be made..