I think the position looks ok. If anything I would be looking to modify to get some elbow bend in to reduce the forearm profile and maybe get lower.
BUT I've been paying attention to fit long enough now to say that it doesn't seem to matter too much. There's people around that are in positions that most would gasp in horror at, but they're going damn fast. The body adapts fairly well. The most critical part to a position I now believe is getting aero, but getting aero such that you can maintain the position. I've seen guys change and work on their position, dialling things down, but at the end of a race or in a F200 when your mind is elsewhere you see the position thrown out the window. Get aero, get comfortable (enough) and get the body putting out the power.