This is one of those artists who seems really good, but then I start seeing all these little things that bother me and make me wonder if he knew what he was doing. The first piece, for example: The kid's feet look like they're located -behind- Hulkom (or Venulk or whatever! -awesome and scary concept, btw!-), and I too find the cropping in the third piece disconcerting.
I know we're big on backgrounds here -especially in the higher weight classes-, but I'm with Juggs in feeling you would slaughter a lot of the middle-weights. The details on that geisha costume, for instance, isn't something I see a lot of MWs being able to replicate or compete with.
I'm gonna go with my gut and vote LHW. If you end up there and you get overwhelmed, you can always swallow a bit of pride and ask to be demoted. Or, you can take your lumps and use them as incentive to get better, it's up to you!