Looks like you have a good month left on them. I have some sweet mangos at just over 3 weeks old & their just a bit further along than yours, but don't get me wrong, I think yours look great. As for the lights, I run 100 wt. CFL's, half daylight & soft white all the way through & do just fine. Granted if I used the fancy high priced lights I probably would do a lot better, but for me the oz. or two I get from each plant is killer & does what I need it to do. Yes, it can always be better. For a poor guy my set up works fine except its too small for my liking but my neighbors would complain if it got bigger.