1. Is the total fiat value updated live? Because it seems to stay the same over hours, though the natural votality would increase / decrease the valure all the time.
It is updated hourly I believe.
3. Is it correct that i need a balance equal to 0.1 BTC for EVERY asset i want to trade? For example i want the bot to trade 12 different coins so i need a total balance of 1.2 BTC??
You should able to lower this significantly if you change your rebalance threshold and weight the assets more evenly. The issue is with smaller accounts, since the rebalancing system often trades a fraction of your asset, this will often fall below exchange trade minimums.