It honestly depends on what you want to do and where your interests lie. You mention gearing up to do more group content then maybe work on some dungeons for tomes and gear. Depending on how fresh of a 50 you are will determine which dungeons you can run. Brayflox Hardmode and Halatali Hardmode are relatively easy and they have a chance of dropping Darklight as well as ilvl 70 gear. You could also start working on your relic weapon or just run the primal hardmodes for a chance at a weapon (ilvl will depend on the primal). Also if you're in a FC I'm sure you can ask for help running dungeons ^_^ Well I wish you luck in whatever you wanna do