I've already got the extra inventory for each of my chars as I said above. After buying 3 barrels, I'd like to at least play it once.

I can solo all but the last section of Tangles, (the final battle where you have to get the 2 keys) with all my chars and I've solo'd most of Catacombs as well. I find Bookbinder in Sharn too tough with my chars as they get overpowered too quickly by the 'heavy hitters' you meet on the first floor. I think that one needs a group to survive if you're not running a Paladin type. T only has low level chars as does DTE, so they need time to get their levels up too. I have one level 6 char only. The others are nowhere near levelling.