Tony, I see you asked this question on my website. Here was my reply:
Coming from that direction, it is a Class 4 climb. Don’t know your technical abilities, so that may or may not be something that interests you:
http://www.summitpost.org/mount-neva/151695
Having said that, another option is to go into the north fork drainage before Caribou Pass up to Jasper Peak and walk the ridge over to Devil’s Thumb Pass. My buddy and I did that in reverse this past summer.
http://www.pmags.com/devils-thumb-off-trail-option
Scree and talus up a steep climb but very doable.
As for lightning, depends on when you are doing. Fall is almost here so less of an issue. Generally speaking, 1pm or so is when the show starts during the summer. In Fall, not so much of a problem.
Hope that helps!