geesus I just read the rest of the thread.
Not one of you probably ever ran a fast sprint in your lives. Running to the bath room was probably your limit in urgency.
First - all the legs are the same length. Where you choose to make the hand-offs determines the 'length'. Pretty fcking obvious, but missing most of you.
There are many reasons to choose the order. Some can't give a baton, some can't take. There's first and last sorted.
Some guys are great starters and fade - maybe first. Some guys a poor starts and finish well. Last leg, 2 nd leg.
You may be surprised to learn that Bolt - the fastest man in the world, usually runs 3rd leg.
The 2nd leg in many tracks has the tail wind. A good top speed guy is great there, especially one who can change the baton in a crowd. That change is busy. Usually teams shorten the 1st and 3 rd legs, but its never that short that it should bother you. You may not have any sprinters at all.
Since only one guy has spikes, you probably clocked them yourself. Is the 10:85 fully auto, or just a hand time with hundredths. I suspect the latter.
I'd argue that apart from the 10.85 kid (maybe), you have no idea what your guys can run.
You have more to do that to listen to advice from middle distance runners on the web. I'd train them to sprint, and worry less about the relay. That will fall into place. You maybe surprised to learn that most sprinters have a preference. Follow their advice.
And I was a sprinter, a successful one.