You want to put some low tack tape over where you drill. I did it on mine and if you are careful it's not a problem.
I don't think the glue will help much mostly because it generally won't stick to the metal. If it does and you get a pull out...oh my. Personally I wouldn't risk it. (Almost) all ESB-4 builders who have tried the stock 3-point bridge have had problems. If I am wrong about that I am sure someone will correct me.. but the physics is just not on our side ;-)