Hmm... Less market cap doesn't always mean better.

Yes, it'll mean that it has a lot more room to grow and all, but you'll also be hit hard by bad liquidity. You could be looking to sell your coin one day but at the end you may have to resort to dumping your coins to the highest buy order and losing out 10% of profits or even more.

But i'd suggest byteball, if you're really looking for low market cap AND low coin supply. In fact, it's got one of the lowest coin supplies out there. Hugely undervalued.