The plants became leggy not only because of low light but also because it is too warm in the house to overwinter most succulents, they are being tricked into growth by the warmth and unless you have sunny windows or HID lights, it is difficult to get bright enough light for many succulents. Warm winter nights are not "healthy" long-term in my opinion.

I don't know how feasible it is, but the best way to use those lights is in a garage where it stays cool, or pick a room in the house where you can keep the plants in, and at least open the windows at night so that it gets cold in the room at nighttime.