You pretty much in the range (highish end for me, but no issues). Unless you have a scope, you are going to have to tune by glitch. My Arduino breadboards use 100uF, while my through hole projects can go to 16uF "stubbies" and survive just fine. Greater than 16uF and Greater than 25v is the rule of thumb. Some regulators may need some turning. If you want to be precise, find Grumpy Mike and click his site
As for the 0.1uF, I starting to think they were for the noisey 555s in the same circuit, but DuaneB could not dial the Hi-Freq out for his RC projects.