I have a Sun System with a ballast that I set up in my small dining room for the two-three months of “winter” here. When I used it out in a plastic greenhouse tent with mango trees, I had it on a light rail trolley and it would sweep back and forth over the trees so hot I had to be careful about the spacing and placing so they wouldn’t burn. But it worked great for heat as well as light, covered the whole rectangular area there, and is still going strong now when and where I need it. The bulbs are better bought locally. One local dealer said that for every three to four bulbs shipped to him, only one would work after being bumped around in the shipping. The suppliers are great about replacements, but why not get something that works from the start?
The neon light system I have similar to yours is great for starting seeds inside for spring or winter planting, but for I don't know how it would work for a number of fig trees.