I think they may get a handful, at most, compressed air factories set up in 5 years
As said, you have to train folk...and train and retrain....
It's a huge jump forward.
They'll need to make pilot.plants purely to teach instructors and inspectors etc
But I doubt it's possible beyond a handful, in such a short time.
They'll need to build factories, to build feed and mechanisms to build enough material for the base of the industrial changes.
Charis will bring in I instructors, precise referent objects for measurements, and crucially, initial machinery like lathes and mills to produce machinery to make machinery to fuel the needs of the province without making them too in debt to Charis and as vital ways for the locals to learn.
Vast numbers of folk will need to be brought up.to speed
They have drive, social acceptance and raw skills
But the jump forward, while maintaining a production enough to supply their own basic needs, is gonna be a huge and lengthy project.
Look at China and Russia and how their leaders screwed up :/
Too.easy to blame."communism!" No. It's much more complex than that.
UP are having the blessing of.allies willing not.to screw them over for short term gain, but invest huge decades long effort to let them advance honourable, healthily, sanely
For years they'll need to have factories advancing a little at a time, sending out trained people to new "next step" factories...rinse repeat.
With the knowledge and planning the inner circle has, this can be done immensely better than ever Earth did!

Well planned, the improvement will be at a sort of geometric rate their society and ecosystems can handle
And yeah, they will be a juggernaut but the rate, being non-linear, should come one day as a sickening realisation, a smack.in the teeth to Waisu, lol!
Oops!.we have factories churning out improved Lee Enfield rifles, etc, so go ahead, invade and get decimated! :p