Drilling for endpin jack--Mandolin

I am on a quest to put a pickup in my mandolin (F5). I've looked at several but am currently leaning toward the K & K internal. The pickups themselves look relatively easy to install, but the endpin hole will need drilling out to accomodate the jack. The question is whether it's necessary to remove the tailpiece (traditional Gibson-style) in order to drill it or whether I can get away with drilling with the TP installed. Varnish finish, Unicorn and Mustang LF-5.

Thanks.

Larry