So you're going to stick with metal or jazz? You should leave the stock pickups in because i personally think they sound good. I have tried a 270 before (even though my main is a 370). Jazz/blues tone is not really in the pickups, some of it is in the skill.
Even when i try to play jazz with a jazz setting on my processor, it ends up like banging pots and pans

Yesterday was history, tommrow is a mystery, today is a gift. I'm moving on and starting over. There are things that have been done and past. You cannot change what's done but you can change what has not been. I will fall down and I'll pick myself back up again.