The Apex setup might possibly work.. I've never measured the rise of my HeliBars, but just from an eyeballs-only glance, it appears to be roughly the same as the Apex would allow for. That means that you won't be able to angle the Apex setup back much further than my HeliBars sit. Also, those Apex clip-ons only come in 50mm, meaning you're either going to have to convert to the USD forks or have a custom clamp shim made for them.
Also, I'm glad to see you're not considering lowering the front of the bike enough to accomodate the older VFR setup. I tried this setup, and I found it to be completely unacceptable. Obviously this is just my opinion, but I didn't like it at all; feel, stability or looks wise.