You sort of have to be a certain kind of crazy to like split stays.
It's very helpful to have a system that enables you to live out of your suitcases with minimal unpacking and packing.
It's also helpful to be familiar with how bell services works in transfering your bags between resorts (alternatively, you can cab/Uber or drive your bags, but we prefer not to do this due to the time component). Along those lines, we generally treat resort transfer days just like any other day (i.e., go to a park, etc.).
With those two caveats, we actually find split stays to be a net convenience at WDW because everything is so spread apart. Specifically, by planning your resort reservations to coincide with your park days (and ADRs), you can minimize a lot of travel time (especially if you're relying mainly on Disney transportation).
In fact, we like split stays so much that we've done a 5 resort split stay (over 2 weeks) and actually have a 7 resort split stay planned for next spring (also over 2 weeks).
So I don't think a 3 resort split stay is crazy, provided you're the kind of crazy that likes split stays in the first place (which we are).