With the risk of getting shot amongst all the great modelers on this forum, because I'm not sure if it would work on the geometry you have there, but have you tried the bend deformer?

I can't stand modeling so when I'm forced to build something I do everything in my power to avoid moving vertices, and the bend deformer is a really nifty thing for creating smooth curved shapes on high resolution geometry(you do need an awful lot of extra edges most of the time) and bending legs on chairs, pipes and things like that. As well you can rotate and move it and apply multiple deformers, and as long as you don't delete the history it stays where it is so you can edit things later if your bend is too sharp. I've become so obsessed with it that when I model something it's more about incorporating as many bend deformers as I possibly can than actually building the object

Nilla