Pally: Blast vs Divine charge?

Sanctuary (HH) isn't really awful, but I wouldn't consider leveling it early on now with the way Big Bang changed things. It's still useful during defense ups for an extra 1-2mil damage at level 32 depending on how long the defense up lasts for which does add up on a few bosses like Zakum. For Papulatus I just use it right when it's going in to heal which gets me another mil damage in which I wouldn't have been able to get in with blast considering how little time I have to use it (and I mean right when it's about to be completely closed off from attacks). For training I would mob the entire row with rush in Oblivion 4 and then use it since that just seems more fun for me, advanced charge blow with rush probably would have gained more experience buttt it just amuses me killing so many and having all those drops in one spot.

Rush is something you should definitely leave for last since the range is fixed now it doesn't matter if you use one handed or two handed, all that changes with that is the damage and there are more important skills to level. I left it at level 18 and maxed everything else.

Holy vs blast is something i'm not sure about since i'm not really sure where people actually train now. I maxed holy before blast since I trained at Skeles but it really depends on what you're actually going to be training on or bossing. If you're going to be bossing i'd recommend leveling stance too because it helps greatly against alot of them, I can't stand bossing without something like stance anymore because of all the knockbacks.