Sure, trial started
As for 'banrate', bans aren't really quantifiable. If you keep a low profile and bot cautiously, you should be fine. I don't regularly run the script for extended periods as I have no reason to bot, so i'm no expert. I'd suggest asking around in the chatbox for suggestions.
Apa
Bans are pretty random, although 4 consecutive hours is quite brave! Try botting with longer breaks for shorter periods of time per day - hopefully this way your accounts will last a bit longer