Dan: Having flown frequently in various 200 and 360 style of Lancairs,I find copious advantages to the long wing and just a few mild disadvantages.
The long wind advantages are:
-slower takeoffs
-slower landings
-less tire wear (takeoffs are shorter)
-less brake wear (landings are shorter)
-lower stall speed (57 mph in my 360 at gross)
-all of above permit more options to use short fields
-faster climb (more wing lift)
-longer glide (more wing area)
-faster speeds at all altitudes (lower angle of attack at all speeds)
-slower lateral roll rate (makes chop and turns more comfortable for pilot and passenger)
-safer accident speeds (minimum landing speed is reduced)
-accidents are more survivable (no one would get hurt at 10 mph)
-traffic pattern flying is safer (slower speeds possible because of lower stall speed)
-time to climb to altitude is reduced
-engine out glide is improved (more time to "think" and maneuver to alternatives)
-more fuel capacity (I don't recommend this option; 1000 mile range is plenty)
The several disadvantages are:
-reduced maneuvering speeds (potential to overstress our quite strong wings)
-reduced wing loading causes (nearly) imperceptible reduced comfort in chop
The above lists are not exhaustive and surely others will add or subtract.
Remember that Lance endorsed the long-wing which suggests that the longer wings don't challenge structural integrity in our planes. Also remember that it was not by accident that Nature designed long-distance birds to have long, thin, narrow wings; they are simply more efficient and energy efficient at flying. OTOH, if you fly gut-wrenching, severe "G's", then long wings will not answer.
Dan, I recommend that you not make those longer wingtips removable; you won't remove them after you fly them. Greg Nelson (LNC2)