Your plan sounds like my plan only I stay onsite and eat at at TS for lunch most every day in the same park, no extra travel. FP in the later part of the morning, break to hotel after lunch, grab CS dinner at hotel or in park depending on the mood. Sure I made plans at 180 & 60 days, but I can't do a last minute trip unless I want to pay $$$ for 4 airline tickets.
Well, that will work as well, however, making ADR's even if it is for the park you are planning to be in, forces you to actually show up in that park. FP's are a flexible option for me, but, eating is not. If it's raining, I may just decide to stay away completely. That means that I have to either ignore ADR's and pay a fee for anyplace worthy of going too or spend my time canceling the ADR's in enough advance time to avoid the charge.
It's a help that I usually do not go for over 3 or 4 days at a time, but, this last time I decided to make those FP reservations and ADR's (only 2) and somewhat plan what parks I was going to be in and when. I did that mostly because I had been listening to so much trash talk about how awful the MM+ system was that I wanted to try it out for myself to see what was just so much bull or fact.
My first morning was planned for DHS. (I wanted to witness some of the demolition of the BAH) I got my 3 FP's for the morning (bear in mind that I did this just 9 days out) I got ToT, TSMM and Star Tours. Either between the times or after I went to all the attractions and shows that were of interest to me. I then took the boat from DHS to Epcot, had lunch and worked my way around the lagoon arriving at China for my first ADR. Had dinner and continued around the lagoon before catching the boat back to DHS to get my car.
The next day I started at Epcot in the morning. I went on every attraction there up until around 3 when I left for a break. I had FP's for Soarin, Spaceship Earth and Mission Space (didn't really need them for the last two), had lunch and continued to go to the attractions, TT, The Seas and The Land and Ellen and one more spin on SSE. I left for a break about 3pm and rested the old bones and then had dinner at Golden Corral before heading to MK. While waiting for the parking Tram to start moving I glanced over to the right and watched the latest space launch from Kennedy Space Center. Upon arriving at MK I went immediately to the kiosk to attempt, unsuccessfully, to get a FP for 7DMT. I wasn't surprised to find that it was booked, so I just did a few other attractions and as soon as the Electric Light Parade started I headed over to 7DMT and without a FP I entered the line and less then 30 minutes later I was on my way out of the attraction having experienced it without jumping through hoops.
On the third day, I started at MK. Got FP's for Peter Pan, PoTC and Haunted Mansion. I also had a luncheon ADR at Liberty Tavern. Did them all and others and again left just after the 3pm parade and rested up a touch had dinner at Red Lobster and went back to MK for the Evening. I then just casually wandered around hitting the attractions that I missed earlier, plus repeated some of my favorites and left just before the Fireworks. (I'm not a big fan of Fireworks or Parades to that helps with the must do selection.)
Bottom line... everything worked exactly as it should have. No glitches, no lost reservations, just totally clockwork. Everything that was supposed to happen did with no flaws at all. Me thinks that some of the problems are cause by the guests and not the system. If you know ahead of time exactly what you want it is considerably easier and with very few, if any, problems and dangerous changes. I also figured out that I could have done everything I ended up doing without a FP. It might have involved a slightly longer wait time, but, in most cases not that much more.