you can use 2 weapons, no reason to stay a pure melee, if you are a dedicated weapon user, going for bow is viable and strong since you are pumping stamina, so it will benefit from it far more than if you were to use a resto staff on a purely melee (stamina focused) character.
Now it comes down to wear heavy armor or not, obviously you get better resistances at the trade of less stamina management, but if you can pump that stamina up and up and up, it should work to stay and focus on heavy armor, but medium will always benefit you more. Of course you can go 4/3, but you would lose a lot from both armor trees, while gaining a little from both.
Don't hold lag as a cause, not for now anyway, its gonna be a stress test, there will be lag.
Also any character you choose for melee you have AAAALLLLWAAYS more range than a pure ranged character.
DK fiery grip
templar javelin, ball of god that hurts even without magicka pumping, charge, pure slaughter.
Nb just teleport /lol
All of these close gap spells have MORE ranged than the actual range of pure range characters, so getting to them shouldn't be difficult, staying alive after killing them is another deal.
you can always go with the pack and simply ping pong ranged chaarcters with fiery grip javelin spam, since hey, their range isn't that rangeful after all lol.