My friend is on the way over; we'll be finishing our 40-planet game today with the latest patch. Hopefully we can start an 80-planet game after that, at level 7.
What's harder/more interesting - a pair of level 7 AIs or a level 6 + level 8?
Sounds like fun! Hmm... a pair of 7s or a 6 and an 8... that's a tough question. Level 7 is the threshold at which all of the AI tactics are used, so I think that probably two 7s would be more interesting in that regard. But if depending on the styles of the AI players, having one really strong at 8 and one a bit weaker at 6 could also provide a different sort of interest. If it were me, I think I'd prefer the two 7s, but I don't think there's anything wrong with either of those choices.
I am still not entirely clear about what I've read about special starting planets with special starting ships. I'd love to start with parasites... Those ships are the best.
If they are in the starting galaxy, you can click them and take them while in the lobby! And if they are not, you can just generate some more maps until they do come up. If there's something good for your friend adjacent to your parasites, then so much the better.
With each galaxy map, there are 8 possible starting planets, and each one has a specific ship type with it. Whichever planet you select is the ship type you get, along with the position. If you don't click any planet, you'll get one of them at random. Let me know if you have any other questions on that, if there's still something unclear I'd like to try to make it clearer. I improved the text inside the lobby itself, but you may not have seen that since the change.