Sup folks! ~135 hours in, 4k hours on Factorio, still learning the "verticality" aspects of this game and enjoying the process.

Two questions, if I may.

1.) I find myself "daunted" by big projects. I understand the flowcharting, the "layout" mentality (mostly in 2-d cuz that's where most of my experience has been, of course) and I understand the mechanics of figuring out your desired end-product and then working backwards from that. On those aspects, I'm not asking for help. Instead, I find myself (frustrated by the obvious pun) boxed in and daunted by how to train myself to incorporate aesthetics.

Full context, I'm on the ASD spectrum, with flaming ADHD to boot. Executive dysfunction / executive-feature-creep overload is real. I can make large sprawling platforms. But then I'm stuck with spaghetti, or if I bring it to a v2.0, "lasagna," with essentially a few stacked flat-floor-two-dimensional layouts. Should I tinker with my exterior shell designs first, and then carve out spaces within for individual production lines and sub-lines? Should I just lay out a platform at some ground-level reference altitude, make it work, and then figure out how to transplant the final product onto stilts near by (without blueprints)?

I have nothing against long journeys of a thousand steps, and I know they all begin with "a single step," but I'm having trouble plotting out steps 2-10, if that makes any sense.

For example, I'm in a 2-player multiplayer campaign right now. My co-player has made a perfectly serviceable "build-everything" re-supply location that each of us have tweaked / patched / troubleshooted / etc. We're both into the idea of me finding a new location (done) to build my own "competing version," and that way each of us can fairly critique the other's work, obviously with an eye toward marrying the best of both versions either elsewhere in the same map or incorporated into our early-stage work in some future playthrough, i.e. whenever a new update causes enough map / recipe changes to justify scrapping and starting over. My new location is accessible, but essentially all raw mats will need to be shipped in. is it really reliable in this game to rely on a small quantity of multi-cargo trains, perhaps even a single haul-everything train? Or should I plan on a larger platform with lots of single-item depot locations for smaller ant-farm-size LCC trains?

2.) Much briefer question, is there any functional / non-cosmetic incentive to leave a radar tower in place after it's revealed the max extent of what it's ever going to reveal? We have 5-8 towers currently active, and to finish revealing the map the way we want to (co-player-agreed-upon self-imposed challenge) would involve going up to perhaps as many as a dozen in total. Does deconstructing them present any quantifiable drawbacks beyond those self-imposed by playstyle?

Thanks!