DON'T DO KENSINGTON PARK! It is not needed and really hard(harder than Dragonspyre itself.) Once you have beaten the Ironworks you need to do Newgate Prison, Knights Court, Katzensteins Lab, Counter Weights East and West, and Big Ben. But don't worry I finished all the dungeons in one day. You are still far from Mooshu not even halfway done with Marley Bone. But seriously it doesn't take long to complete them and I thought they were pretty easy, if you have some help. Hope this helps.
I AGREE WITH LUKZILLA! DON'T DO IT! I have never done kensington myself but that's for a reason. I have a friend helping me get to mooshu and he told me not to do kensington because it's very hard. Oh yeah and about mooshu you're actually really close (most of what i'm saying comes from my friend lol) i'm actually trying to get through katzenstein myself. ;)