Your details are crazy, especially the drone, but the overall concept is feasible. I did this professionally for years.
Wheeled or tracked R/C cars are much easier to control, and can pull a greater force horizontally without losing control. In the 90s it was somewhat standard, especially in office environments with drop ceilings, to use a little 9.6v Tyco Fast Traxx to zip a pullstring across the ceiling grid, then use the string to pull the much heavier cables. (I'm not sure what's in use today, but I put a LOT of miles on that Tyco.)
Leave some slack at each end, sufficient to lift the cable up and place it in ceiling hangers "later", wink wink. Because leaving it flopped along the ceiling grid wasn't professional, nudge nudge.
Anyway, you don't splice in the middle. Neeeeever do that. Hidden splices are madness-inducing. If you need a mid-span location, you should be pulling all your runs from/to a closet and just use that as a distribution frame.
In your case, you could pull string from both ends, tie the strings together, then use the strings to pull a direct run of cable.
(Having that big rechargeable 9.6v battery came in handy other ways, too. There were plenty of times where I needed a talk path but only had a dry pair. Hook up the battery in the loop, with a butt-set or plain old beige phone at either end, et voila!)
RC vehicles, balls with an eye bolt & string w/ a sling shot, and fish tape/poles were key things for the miles and miles of network cable I ran in a previous life.
To add on to the pull string.. if there is a remote chance you have to run a cable the same direction again in the future, try to leave a pull string in place when you pull all the cables initially.
Wheeled or tracked R/C cars are much easier to control, and can pull a greater force horizontally without losing control. In the 90s it was somewhat standard, especially in office environments with drop ceilings, to use a little 9.6v Tyco Fast Traxx to zip a pullstring across the ceiling grid, then use the string to pull the much heavier cables. (I'm not sure what's in use today, but I put a LOT of miles on that Tyco.)
Leave some slack at each end, sufficient to lift the cable up and place it in ceiling hangers "later", wink wink. Because leaving it flopped along the ceiling grid wasn't professional, nudge nudge.
Anyway, you don't splice in the middle. Neeeeever do that. Hidden splices are madness-inducing. If you need a mid-span location, you should be pulling all your runs from/to a closet and just use that as a distribution frame.
In your case, you could pull string from both ends, tie the strings together, then use the strings to pull a direct run of cable.
(Having that big rechargeable 9.6v battery came in handy other ways, too. There were plenty of times where I needed a talk path but only had a dry pair. Hook up the battery in the loop, with a butt-set or plain old beige phone at either end, et voila!)