Welcome aboard, HAR, HAAARRR, HAAAAAARRRRRR!
Loved your Turbo journey story, always enjoy reading those. You have a good selection of starters games, I hope you enjoy shooters because there are an endless supply of them! I'm personally a J.J. and Jeff fanatic despite all the flack it gets, but if you loved China Warrior then you might find enjoyment in J.J. and Jeff as well. Hilarious games.
If I were you, I would invest in a PC Engine Duo or Duo R/RX. They tend to be less expensive than Turbo Duos and since you already have hardware that can play US HuCards, you'll have be able to access the vast library of Japanese HuCards as well, which also means you can play Arcade Card CD games.
Yes I know the all the Turbo/PCE hardware can be very difficult for beginners to wrap their heads around. Check out the
NEC Compatability Guide on the site to make better sense of all this system card mumbo-jumbo.