I agree with @SneakyPete. With 14 days, you’d do better to have a slower-paced set of customized plans rather than try to use the existing ones. (You can use those as a start/guide if you want.)
Start by figuring out how many days you want to spend in each park of those 14 days. Then start prioritizing rides. The Tier 1 rides you want most, make sure you plan to tackle LATER in your 14 days so that when you go to get the FPPs, you are “first in line” to get them. (For example, don’t try to get a SDD FPP at 60 days out. Instead, try for it at 60+5 days our or something, when you are far more likely to get it…which means having a HS day at 5 or more days out.)
You might also want to split parks up. For example, let’s say you plan to do 3 days at each park. This means you can focus on Frontierland and Adventureland in one day, Liberty Square and Fantasyland in another day, etc. Not that you can’t overlap…only to make those your focus.
Another option is to make your first day at the each park an “overview” where you hit highlights of everything. Then on subsequent days, focus on the rides you couldn’t get the FPPs for (7DMT, etc), or things that you didn’t want to spend the time on initially for (such as Tom Sawyer’s Island).
As Pete said, though, you need rest time. So make sure you intermingle plenty of resting times, including shows and food in the Air Conditioning! Several of the rides at MK are good resting times as well, since they are long. PeopleMover is like 10 minutes. Splash Mountain I think is 12. It’s A Small World is also over 10 minutes long, etc.