"The one thing you absolutely shouldn't do, Vepir, is bump lots of old questions up to the front page in a short time span. Three or four old questions bumped per day is about right. I recognize that at that rate it will take roughly forever to get the appropriate tag on all those old questions, and it would be much better if the system could be induced to make all the changes at once without bumping anything, but if that's not an option then I urge you to limit yourself to three or four a day."

-Gerry Myerson

Given @quid's updated search for questions using the term "palidrome", at 3.5 edits per-day (3-4 as Gerry recommended), this could easily be accomplished in 72 days. All things worth doing are worth doing well and appropriately.