The 86b is nice, but I'd not use that much cam in this engine.
Pat Downs told me (and the numbers bear out), "there's no point in lifting Panchito valves over .500". It's super-tough to get a long duration cam that doesn't lift over .550", even with "1.4s" (which often measure close to 1.5:1). It's not just big compression and big lift that the 86b likes - it's big heads as well. What you are proposing seems (to me, anyhow) like a bit too much of everything for a 2110 with Panchitos.
... unless he ran it with the 1.25 rockers he's got. @Robert M has a Pat Downs 2180 (I think) that uses a big CB cam (a 2292, if I'm not mistaken), Panchitos, and 1.25 rockers. He also runs a Vintage Speed exhaust, and the engine made nice power in a pretty hot climate. With a cam that big, it's going to need about 10:1 compression, which may mean fly-cutting the heads.
It just starts to get spendy pretty quickly, and the more stuff you change, the closer you get to just starting over. I think Mike wants to keep from starting over.
If I was trying to stay on the sane side of the street, I'd stick with the 1.25s and get a nice cam with gentler ramps, but with enough duration to have some punch. Type 1s like duration, assuming they have the flow to support it. A W120 doesn't run out of gas until 6500- 7000 RPM, and is pretty easy on the lifter bores and cam lobes. Running the CB duals is fine, there's no need for 650 springs and all the attendant issues that go along with them. I'd run duals even with the W120 - I tried it with HD singles, and broke one.
You can run CB lightweight lifters with a Web cam, as long as it's ground on an EP12 blank.
No matter what, I'm interested in seeing what happens. It's super-fun to spend other people's money.