Does it always increase though? It seems to top out at ~6 * 162, but if I bump e.g. 30 times a month my super-bump value is only ~3 so that's only 90 per month total, unless I messed something up in my math. The mini bump seems more valuable at that point.
You can do
both mini bumps and super bumps -- they don't interfere with each other. If you try to ration your super bumps, then you're just throwing some of that potential effect away.