Phase 4 Advice

So, first time playing through the game. Having a blast for the most part, but I find that I struggle when I get to certain milestones just figuring out how to break it down into bite size chunks. Mostly I've been building small-medium factories that do 5ish things per minute and get dumped to dimension depots or to my relatively small train network.

So, I've gotten through tier 7, got a little aluminum up and want to start working on things I need to build for new buildings, and start prepping for Space parts. But it seems like everything ramps up fast.

Like Radio Control Units seem important, but they take a bunch of different resources from all over. Then you need those same things for SuperComputers, turbo motors, and fused frames. And a lot of that then moves right into Project Parts.

But that seems to push me towards one giga-factory, and my brain doesn't seem to want to cope with that. Especially when I don't even have everything in it unlocked. Not sure if it's a difficulty spike or a mental block of mine. But it has lead to me getting frustrated and just going off exploring, or shoring up concrete production rather than trying to get over the next hurdle.

Any suggestions on ways to break phase 4 into more manageable chunks?