It should be a lil better now with most of the MM nerfed to where its a lot harder to solo them, only one I know of that can kinda be pulled off this way is Fairy mission, and it takes the active person most of the time in mission to pull it off if not a lil more.
As to where you can solo at your level it gets tricker, I am thinkin maybe DS at one of the zonelines, maybe in SoL B, Lguk but you would prolly hit quite a few light blues and only a few dark blues. Seb, Veksar again would have to pick your spots. Maybe KC if you dont mind messin up your outpost faction. Velks bottom spiders should be doable. Droga/Nurga one has a suprising number of Dark Blues in it to my 70 nec ( i forget which one is which they are so close toghether but one is about 5+ levels higher then the other) Good news in doin this one too is can pump your faction to Chardock, making Chardock B a good place for ya. Also Charsis, seem to recall a friend of mine doing mushrooms or some such in Fungus Grove.
Sorry hope some of that helps.