the problems i’ve run into with having a short ceiling height are mostly related to the chains hitting the joists. i ended up cutting a small nibble out of the bottom of one of the joists in my ceiling to allow the chain to clear it without rubbing.
For the vacuum hose, if you have an extra hose adapter, simply cut a hole in it so your hose can run 90° to the sled. The airflow path isn’t optimal, but it prevents the hose from running into the ground when you run low.
See my images here for a picture of my setup.
The end of the sacrificial hose coupler is open, but it runs into the sled, so the only airflow path is through the hole in the side of the coupler.