Do i need to change realms?

Started day 1 of classic got to 45 then took a longer then expected break came back for tbc but got bored after hitting 49 but i really really wanna play wrath classic (best wow memories are during wrath wanna get a toon to 70 before it comes around) so should i transfer/make a new toon on one of the mega servers i keep reading about or should my server be fine (Windseeker)Ps. Im typically casual these days but wrath might bring the raider out of me again.