I think I can get online around 7 pm central time.
As for custom Heroes -- the HQ module doesn't make the barbarian roll 3 dice to attack or 4 dice for defending or anything like that. Players have to keep track of their own statistics. Everything can be modified from body points to standard spells and equipment. Like I said before, you can make custom Items and Potions, but you can't really make a custom card to go with them. There's only room for the name of the Item or the name of the Potion, no room for a description of the Item or Potion. Therefore if you're making up something completely new, you'd have to explain it in the message window to make sure all players understand.
Unfortunately, there is no generic Spell icon for making up new spell names. But that isn't that bad, you could use the generic Item icon and just call it whatever Spell name you want. Again, just make sure everyone is aware of the spells.
Lastly, the figures for the Heroes actually have a couple of different images that you can switch between. And there is a figure for Sir Ragnar, which is the Chaos Warlock just how it says in the rules for the "Rescue of Sir Ragnar." So if you're thinking about a Necromancer Hero
there might just be a figure for you.