I was expecting to hear more from Blair on this given we are running his campaign on it.
As far as I know we are still doing characters in word though we may have to find some collaborative place where we can store them and can all access them. It may be the case we just email them to the DM (the other players don't really need to know what's on our character sheets) then we could put the very basics up onto Roll20 using their character sheet so the DM can access the really necessary info when we are actually playing.
Blair has set up a Black Hill Games channel/server on Discord, though i still haven't tried talking to more than one person on there at a time. But Blair and I had an easy conversation on there the other day.
I am going to go with assumption we are doing it on our word docs anyway, and at this stage will be setting up to use all our house rules as well.
So I guess one step would be to set up a time to try and all get on at same time and see how that goes.