Welcome Victor - and I hear ya re ex-uber-guildy, only so many hours/days/months/years you can spend with a leading guild before life takes a higher priority

Re the guild level - just in-case you don't get a rush of new members and are unsure of how to boost it quickly - there are several ways to quickly boost your guild level
- hand in all the faction tokens you can - good to get you started
- kill named - some of the higher end names gives a nice guild boost
- do as many HQs as you can stand - doing them x6 should make the levels fly for a bit
- and my favourite, wait till your team is lvl 70, go to the RoK docks, /lock, grab all the faction writs and do about 20-30 complete laps (about 5ish writs a go) a night for a good month

The last strategy works best if all your team is evil as the evil writs require you to kill the common stuff hanging around the docks. Whereas the good writs require the less common mobs.

Continually doing say 5 writs x 6 team members x 30 laps quickly adds up to some serious guild levels

Good luck