Is this a commercial kitchen? Depending on your local code, plastic might not be allowed in places of assembly unless underground or above a fire rated ceiling- or not at all. It would be wise to ask.
Sometimes, when the floors and walls are finished but appearance is important a good work-around is a column. We would run EMT above the ceiling and duck down into a square stainless steel column ore brass or stainless tube. Often the column would end on a work surface & be attached with a flange. We would cut an appropriate hole in the surface and send the wiring below. Usually, inside the column was MC cable for easy working.
For running on the floor, it would be wise to check with your location's version of OSHA. We want to avoid trip hazards. For commercial kitchens, we also want to avoid creating an uncleanable area. Maybe running along the wall a few inches up would be possible & allowed.
If the floor runs are under fixed-in-place appliances or counters, you may be able to put Minnerallac type hangers on the floor and install the conduit in them.
And, it may be prohibited to put the receptacle outlets facing ups under the appliances. Check your local codes.
Maybe something above would be helpful.
Paul