WTK: What to get next

[Mr.Peso]

Short Heavy Barricade all the way. It will help your team alot, enabling you to go further in hard or rag and thus earn more xp, gold and possibly loot to progress faster.
SHC is a must.

As for a twohander you can go with a marketplace weapon (Morningstar or Long Iron Mace) until after you bought an SHC.
After SHC I would start with a Butcher or Boarding axe. Twohanders start to be really good at 3mil or above price range when you get access to a Heavy Warhammer and later Stone Maul.
There's no point in saving up 3 mil while using marketplace stuff, though.