Very nice ties on those jigs SK. I recall hearing that 1 1/2 X the hook length is the maximum for tails. I don't know that it matters much with Bass and Crappie as they engulf their prey. On the other hand, When I tie Pompano jigs I trim close to the hook bend due to their feeding habit of pecking the jigs.
Your jigs should be fine but if you start getting short and missed strikes you can shorten them up a bit.
Interesting question though.
When is chenille too long?