I've never used Start9, when I was looking for a homelab setup, it didn't come up. Umbrel was the one that was suggested, they also have apps for other things like nostr relay and bitcoin nodes too. 
What's your setup? To use lighting you'll need to download the entire blockchain first then sync it and then run set up lighting. 

That's why I asked, because if you want to use it more than just for lighting, say a home server, then you may need to explore some other options too