Ok, first, I'm wondering why 3 of the last 10 level requirements in the 2.0 storyline weren't there (lv45 and 47/8) Anyway, I'm levelling my alt to 48 for this purpose.

Also, in the storyline up to 2.55 from 2.0, is it right that I can freely level up from 50? I was on 50 throughout, up until Heavensward on my main ages ago. What about the gear level requirements in certain battles up to the end of the 2.55 area of the story?