thanks guys for your answers.

I will give my feedback on them when i have more time today.

Another question: i have downloaded the wallet on supercoin.nl, also extract the blockchain snapshot. I have replaced my wallet.dat file in the supercoin folder. Now it says: wallet.1511162266.bak? I dont understand. Is that correct?

Also, my wallet has 0 connections and doesnt sync. What can i do?