well, not 1000 per solar system, For example, EVE-ONLINE, has millins of sollar systems. And just one server.
it has a maximum of 34000 aprox. clients.

The thing is how the game is working, there is no need to load solar system, just need to know coordinates of players, further data, don't need to be real time, and just download when players clicks some here.

Though i will of course take attention to everything.
Anyway first i need to tests the script, and do code and code, then i can carry out multiplayer tests a bit better.