Have you tried asking Lutron, they have a very helpful customer support staff. You'll need to know a bit about the way the 3 and 4 way switches were wired (there's more than 1) to answer the first two questions. #3 depends on the remote, the Harmony has a fairly good spread, 45 degrees is alot. #4 codes are available in many formats, Harmony will be able to tell you if they have them. #5 If the loads are incandescent, then the equation is correct, other loads have different factors

jcmitch

[Link: lutron.com]