I've recently discovered a similar program called Guilded, which seems to have all the same important creatures of discord, but better organized (and a larger file share limit). We have not moved over, but I've been spinning up and organizing a server there, just in case Discord craps the bed like Reddit did.
If I can level steadily, I'd probably pick druid to get the stop-aging feat, presuming that it means indefinite life span.
If the druid feat does not work that way, then I'd probably pick elf for my race.
But if it does, then I'd be tempted to go human and get the dragon related lineage.
If I can pick third party, then I might just go straight to dragon instead. :)
Though part of me wants to do kitsune with dragon-scion heritage, just to be very Extra. 😃