Hooray for Princeton!
I used to run a sales route through Princeton every few weeks about ten years ago. LOVE that town! It deserves a good golf course, like it sounds like you're trying to do, Greg. Concern for length of walks between baskets and next tees is a prime consideration in design. You have good instincts and you have been receiving some good input. Ungodly walks between holes was always the detriment of the otherwise highly acclaimed Rock Creek temporary tournament course at Cedarock Park.
Old time rule of thumb was no closer than putting distance and no further than the course's longest hole. Of course, now, 20/30 years later, putting distance has officially shrunk from 40 to 30 feet and longest holes have lengthened from the 300'+ range like #18 at Johnson Street, which I helped design and build 22 years ago, to the 1200'+ #8 at The Springwood Players' Course, which I just got in the ground last month. Separation between basket and next tee should never be a tediously long walk, unless it is necessitated by unplayable areas between holes, and that should not be allowed to occur more than once...maybe twice. If it is a common thread throughout your layout, you may want to think of somehow, perhaps, re-sequencing, redirecting, or resizing your holes. And as for the other end of the spectrum, you want the separation to be such that players ahead are not a visual distraction or safety concern to players behind.
And speaking of safety concerns...many folks overdramatize the possibility of a park patron utilizing another activity area being injured by a flying disc. In the history of the sport, it's only happened a handful of times, and I think that they were all in California. I have played many courses where holes are in relative close proximity to streets, walkways, ball fields and soccer pitches. The activities can coexist. It is largely up to us, as disc golfers to always put safety first and realize that a standard rule of the sport is that other park patrons have the right of way. Of course, if some non-golfer wanders onto the course, politely call out, "Heads Up!", or whatever.
Greg, a distance to which I beg you to be wary, since you have that nice lake around which to work, is the distance between basket and disc disappearing water. It should always be greater than putting distance. On your map, it looks like you've done that.
Anyway and regardless, congratulations and good luck!