Maybe some of you remember me, I have been a long time EQ (and mage forever) player, started on Bertoxx my mage Adonhiram on 1st of May 2000, moved to AB as the european server was released, and played till January 2008 with two interruptions. I quitted at the beginning of SoF and now I am coming back, the nostalgia just was too strong

Just wanted to step by and say hello to all mages. I see the forum is not as crowded as it used to be three or four years ago, but I suppose that's the general fate of EQ. Whatever, this game just has possessed our souls, so it summoned me back and I was unable to resist.
It is funny how I went from raidmage status to babymage one (dinged 81 yesterday evening...), I feel completely lost after tree years and almost four expansions to catch up in terms of levels, AAs, spells, flags, and, of course, gameplay. It will take some time to get my reflexes back and to discover this strange thing which are the Mercenaries, it seems they have somehow changed our gameplay.
Another thing which bothers me is the total revamp of casting and refresh times, I was at first surprised how quick my bolt can be casted now and then I was unnicely surprised as I noticed slamming my Fickle spell button would not allow me to chain Fickle till a recourse for Bolt or a Gift of mana proc for RS. I guess this means, even at my new uberlevel of 81, a new cycle/weave even in group/solo situations, not to speak of raiding where the "of many" line already became a key element since SoF.
Would you allow me to take some of your time and to ask you some basic questions :
1° Would you advice me to skip all group progression quests in SoD and Underfoot to focus on leveling so I catch up with my guildies ? No point in doing missions in SoD and UF ? Or in the contrary should I do those as they might be an interesting source of xp and loot to gear me up with group stuff before I restart raiding at 90 ?
2° Would you advice me to hire a mercenary right now at 81 or shall I wait a bit ?
3° I have only the Redfang belt as pet focus (sucks, I know), shall I just skip getting a better pet focus till I hit 90 or are there groupable ones in the levels between 81 and 90 which are worth a try and a helping hand from my friends ?
4° And, of course, the Evermage Question ; how do mages perform in HoT on the raid and on the group side nowadays ? The few I have read sounds bad for raidmages dpswise, and I saw different opinions about pettanking/ survivability in group content, though, I guess, it's a question of tiers and appropriate level/gear for the mage, as usual.
5° Last but not least : with this strange new (well, new for me...) spell refresh system, would the correct everyday weave (soloing, group...) at my level be alternating Fickle and Bolt, not worrying about fickle recourse, and tossing a RS inbetween, as usual, on GoM procs ?
I hope my questions don't sound to silly or noobish, but I am now... a noob again, oh my

Thanks for reading till the end, hehe !
Your Adon.