For dies I like Forster, ask your reloader what he likes and if he uses the Lee Collet dies. You would have to cobble the Lee die together by getting a WSM body and then 6.5 mm sizer collet and mandrel.

The ELD-X will be fine for longer shots and behind the shoulder, but like you I would feel better with a bullet that works on all shots. On Elk if they are near a canyon or a fence line I can't cross I aim for the off side shoulder. The LRX or any of the premium bullets will work for this. The Nosler LRAB would be worth a try as it's shape is similar to the ELD-X so there is a chance you would get good accuracy with them too.

"When you disarm the people, you commence to offend them and show that you distrust them either through cowardice or lack of confidence, and both of these opinions generate hatred." Niccolo Machiavelli