Have to admit, I'm a product of my environment. I grew up in a household that had nothing but Leupold on our rifles. This is not a bad thing, as Leupold makes a fine product. With that said, I stepped out and purchased a Weaver Grand Slam 3-12 and put it on my .270. I liked it, it was very clear, but it had no where near the eye relief as any of our Leupolds, so I have returned to my roots. I agree with you, the 2.5-8 for practical purposes, all the scope you will need. I do like the idea of a fixed power scope, however I still want the flexibility of a variable.
As for use on Elk, although I have not had any experience with this round on Elk, I believe this bullet is sturdy enough for that task. Even if the shot is in relatively close quarters, I wouldn't hesitate. Although I may be somewhat picky with regards to the shot angle? One day, I do hope to take an Elk with the .358 Winchester, I'm pretty sure though I will be shooting the 225 Nosler Partition. It's a good combination of weight and velocity, it also has a long track record on big game.
Dave, Have you shot anything with that particular load out of your 350 Rem Mag?
Flinter