Here is how I think about it. Officially, Sage is not a booster. The rest are, unless you run maybe 2 or 3 loops of an Ultima a day, and then you may need more rest days to process the loops.
If you run an Ultima program, and you find it draining (as Paragon might be), forget about “booster”. Focus on how you are responding to it and stay within the recommendations.
Also I’ve found running more than 3 Ultimas in a day can be very fatiguing.
Does that help clarify?