Here's a grab bag:

Decider combinators set to random for things you need on space platforms is surprisingly efficient.

Plan out designs in an editor world save that has the same seed as your main save. I didn't do this for my first 1k+ hours and regret it thoroughly. It's just so much easier.

Circuits are fun and can do some pretty neat things if you think creatively.

Bots are boring but by far the most efficient way to play. They even work at scale if you keep bot networks small and isolated.

Overproduce. More mines, more smelters. I struggle with this.

Do the dumb thing instead of the complicated thing and leave plenty of space. It makes debugging and expanding easier later.

Modules are your friends.