I'm currently running a Campagnolo Record 11 speed EPS group set on a BMC TeamMachine SLR01. The whole set up is about 6 years old. I'd like to upgrade to an EPS V3 system to get the battery out of sight in the seat tube and to take advantage of some of the new capabilities in the V3 "brains". The question is can I use my V1 shifter/brake levers and derailleurs with the V3 battery and interface unit. If so, then I think all I need to buy is the V3 battery/power unit, the V3 interface kit, a V3 charger and cable, and the in the seat post V3 cable kit. I'm thinking the Campy V3 internal installation tool, the cable guide magnet kit and the cable "cutting" kit would make the job easier.

Am I on the right track here or will I need to replace the brake/shifter levers and derailleurs too? Assuming my V1 stuff will work, is there anything else I'll need to complete this upgrade? Thanks!