To me it seems impossible. I never got more than ~10 connections with SMC, typically 6~8.

I might be wrong but I thought you can do it. That you don't need other clients confirmation. That's why also you have a small advantage to mine block n+1 if you mined block n because you have knowledge of this block n before the others (depending on time for network propagation). That was in discussion earlier in the thread, how much somebody with a strong mining power can "take over" and mine all blocks in a row for a while, that's the main reason why you can't reduce block confirmation much less than 15s, and I think one of the major question regarding this coin.