It is better to travel safely than not travelling at all.
Any time CNFM is better... as AC classes have lesser berths compared to SL berths, the consequential 'quotas' of various AC classes too are lesser. When final charts are prepared, the UNUSEd Quotas are released. and SL class WL with your number gets easily CNFM. But AC classes, find it difficult, in view of 1-Vacation Rush, 2-VIPs claiming them.... your number would remain WL in all probability, unless you have someone up there.
Thank you for your feed back and Congratulations for...
more... your quick decision and CNFM ticket.:)