The reliable way to hire a pro

I'm planning to renovate my kitchen soon and I'm not sure about the best order to tackle everything. I'll need to have the walls skimmed or plastered, some electrical work done like adding new outlets, tearing out the old kitchen and flooring. The new kitchen will need to be installed, flooring put in, as well as tiling and painting. What order should I do all this in? Is there a best way to approach it all?

I feel like the tiles are leaking even though I just had them regrouted. concerned about mold. how do I know if there is mold?

Is it better to hire separately for a kitchen demolition and a floor demolition? The flooring demolition involves removing layers of flooring down to the subfloor and smoothing the floor (ie removal of glue, etc).