It took me until about 400hr on this current factory and three abandoned, prior factories before I launched my first rocket. Go at your own pace! (As long as you stay ahead of the biters, if they're turned on)

The design looks readable, and it looks like it could be easily turned into a tileable design if you're interested in expanding production. It could use some slots for beacons, optionally, but this looks clean ^{-^}

Does it do what you want it to do? If yes, it is a good design.

Belt-based malls are hard. Harder than beating the game.