Why not just use Explorer on all of your non-dining/travel, up to 25K, and then CSR for dining/travel? Then you get the benefits of both. Better to be silver than just a CC holder IMO for a number of subtle reasons.
Also the two club passes can really help justify the explorer too if you use them only in case of misconnect or something when you really have nowhere to go. Usually i find two per year is just enough.