I myself play an R/Mo so I can probably help you on a few things...
Firstly I really dont use my monk skills except resurrect, why? It requires no attribute points to be effective, and, as rangers tend to spend their timeat the back and are tougher than spell casters, I find my ranger is often the last man standing and can resurrect people quite handily.
If your worried about the healing aspect of your R/Mo, it can easily be addressed by a painfully understated skill belonging to rangers: Healing Spring. It heals quite a bit of health over 10 second, currently my lvl 15 R/Mo at wilderness survival 7/8 (this is its attribute) is healing 39 for 2 secs, so in 10 secs thats over 160 health regained. This skill is very versatile, because if your are a stand-back ranger it helps the spell casters A LOT because they are mostly targeted in PvP and PvE. It's also useful if you want to be an in-the-fray ranger, supporting nearby warriors. As for healing yourself quickly, troll unguent works every time. Another handy skill which I would only recommend if your far from the fight is Fertile Seaon, it gives you a nice armour bonus and silly amounts of health which your spellcasters will love you for, it also works well when your are resurrecting because you can take a lot more damage whilst going about your good buisiness.
If your still concerned about your damage gealing capabilities because your not something like an R/E I would look to your ranger bow/animal companion skills, Smites I feel are a waste of time with R/Mo's.
Hope that cleared a few things up for you! (Sorry for my long windedness...)
