Just looking through your power calculations here
7,168 leds running full white, I've gone and used the Quinled power sheets to find this information.
60 leds per meter 300 leds per 5 meter strip, consumes about 50W at 100% RGB.
7168 leds is close to 24 full 5m lengths, so approximately...
Take my approach. Go out at night and if it's dark put lights there. When you have installed lights, go out again when it's dark, and if you see dark spaces, put lights there. Repeat this step over and over.
I acquired these for free, didn't build them sorry so no writeup :(
They're basically acrylic tubes custom made with 2 air ports low and high pressure for small and big bubbles, a regulator for low pressure across all 4 and solenoids for high pressure (still regulated but to a sensible...
The bubbles were very very popular for the 2025 Christmas season. My lawns and roof always also seem to get a lot of attention, I don't have any real eye catching pixel props that aren't common in many other displays (Megatree etc)
High density seeds = hard to repair, perhaps consider alternate node 50mm spacing strings if you want 25mm "spacing" between them.
Strip doesn't like being held under tension, tends to fail from being blown around
Bullet nodes, more expensive?
Moving more towards seeds here, light weight...
They are usable, I prefer them over RGB as they use less power if you're wanting to use white in your display, as they've got a dedicated white led rather than standard RGB mixing to make white.
I mean it's fine for 5-24v but anything more I would be using something more robust, I would not for example be doing that for anything 230v mains powered. I am an electrician so can confidently say, don't just leave live ends hanging out!
If I don't plan to connect anything to the end of a prop, i'll crop the wires and put on a bit of glued heat-shrink tubing, heat that up and squeeze the end to seal it together, I repeat this for each wire.
20 drones.. I'd estimate around $500 per drone perhaps, then the software to control them (unknown cost, probably a few hundred $$) expertise to program them (external source $$$) learning yourself - free but probably a very steep learning curve. Licensing to use aircraft probably in the dark in...
You are likely to be better off hiring a crane to hold a matrix, drones require batteries to stay in the air for a very short amount of time, even less with a load suspended from them, those batteries require charging which will take away time from being able to run your lights, unless you have...