Capacitor selection with multiple regulators
There should be a low ESR cap immediately on the output of each regulator.  Perhaps 100 nF as you show is the minimum, but I'd put more there unless it was specifically disallowed in the datasheet.  If they're supposed to work with 100 nF, then 1 &micro;F ceramic sounds good.

As for the input, you can't have too much capacitance on the input of a regulator.  Put what you can get in 0805 immediately on the input.  That should be more than the skimpy values you are trying to squeak by with.