welcome Welcome back to the game, every vocation still got weak and strong points eks still fine, you asked aloot a lot of stuff so i I will go by points:
1)if 1) If you enjoy ek there is no point to start a ed or a rp unless you enjoy it more.
2) equipments basicaly For equipment basically you can have 3 swords that are pretty good for ek in lower lvls winter lvls. Winter blade, summer blade and gnome sword sword. 3 elementals swords will give you aloot a lot of range of hunts but also is good to get one sword of destruction in case monster are weak against phisical, physical, a zaoan and demon helmet sohuld should be fine as helmet, i recomend helmet. I recommend 1 silver token armor for easy hunts where you dont need imbues mostly pep don't need imbues. Mostly people use fire/earth armors, about imbuements ornate chessplate armors. About imbuements, depth ornate chestplate is still one of best armors for lower levels not levels. Not to expensive and can imbue with everything, gnome shield is pretty good and everything. Gnome shield is pretty good and a cheap option you can also have ornate shield for option. You can also have ornate shield for imbuements. Depth calcei/boh are the 2 boots you need for now, ornate now. Ornate legs still fine too, amulets too. Amulets and ring stills consumable ones and a fox tail amulet.
3) about About hunts, gloth glooth tower/medusa tower/ draken walls /banuta are some of the hunts you can do with a ek lvl 300. they arent to They aren't too hard so to get back to playng should be fine, try playing should be fine. Try to study what defense imbuements would be good before going for a hunt.
4) hotkey Hotkey rotations etc, is a bit to long to answer everything in 1 question, important question. Important thing is before every spell let a mele meele hit land on the monster so the life leach and mana leach of weapon will work twice one for the mele twice. One for the melee atk and one of spell, try spell. Try to keep the utito up before using the exoris spells, if spells. If you got any more specific question you can ask me in comments or in private.