RE: Sunday trail run!

Your plan looks solid, just make this 100 to 120 easy week truly easy and add tiny guardrails like one day of strides and a real cutback day if the legs feel heavy :)
If you can soak it up, adjsut into Pfitzinger 85/12 but trim the first week a touch if any fatigue hangs around, and keep the long run mostly easy with a short steady finish to rehearse the negative split.
Zone 3 then some Zone 4 late should click on race day, just protect reccovery with sleep, carbs and soft surfaces when you can :p