You can do some/all of the DoD missions in the mid to high 50s, at the latest; the missions are dynamic in that the average level of your group determines the difficulty of the task. That said, I can't recall if DoD is a 15 or 10 level range expansion; that is to say the highest and lowest characters in the group can't exceed either 15 or 10 levels apart.
Beyond DoD, and not knowing what your gear level is for the pally/ranger, I'd recommend looking at working on themed/arc rewards from TBS/SoF/SoD.
Here are some of the items I'm talking about, listed from what I expect would be easiest on up to the toughest to complete:
http://everquest.allakhazam.com/db/ques ... quest=4188http://home.comcast.net/~mathadon/Guide ... Crest.htmlhttp://home.comcast.net/~mathadon/Guide ... Blood.htmlhttp://everquest.allakhazam.com/db/item.html?item=72286http://home.comcast.net/~mathadon/Guides/SoF/Triad.htmlThere are other themed quests in the expansions, but those are the ones that will benefit everyone in your group I suspect.
Alternatively, there hasn't been formal mention of it, so it may not happen, but: temporary zone revamps are expected by many this summer (as they have appeared in the past) - good gear for just about every slot and some nice augs, so keep an eye out for that announcement (Blackburrow, Lower Guk, Unrest and Cazic Thule were the previous submissions).