I agree with Billy ... with some hesitation on the dishwasher high loop - because the dishwasher could - COULD - *COULD* - but might not

, have a built in high loop.
I always wrote them up and let a plumber verify that it either had one or they install one.
Also, no clamp at the disposer connection and that dishwasher drain hose could come off, making a real mess real fast.
Also sure that you caught the missing plate at the receptacle back there.
I know you said the T&P needs a relief line, but consider 'how' it is going to be added ...
