Although I didn't like siding with the Institute, their ending has one of the most intense firefights (with BOS), tough even on normal difficulty level.
The Minutemen is the only faction you can use if you want the maximum peace ending, i.e. defeat the Institute but remain on good terms with BOS and Railroad. Unfortunately last time I tried this, Preston Garvey bugged out during the final mission. Instead of the scripted dialogue triggering at the point you enter the Institute, all I got was the, "I've got word of a settlement that needs our help..." junk and it took several reloads from a previous save before it would trigger. This time round I've left Garvey and gang behind in the museum, doing my own settlement building with a view to either a BOS or Institute ending. IMHO, the mechanic for the Minutemen radiant quests, at least after The Castle, should have been the same as BOS, i.e. you can decline and come back later rather than having them constantly sprout every time you get within about 500 yards of PG. They were a useful early game mechanic to build XP (like crafting) but when you're approaching L50 with something like 4000xp or more to the next level, a few low level raider or beast kills and the 150 or so XP for the mission are worthless.
