No problem. 3.0 is 3.0.

It seems like we already decided on that.
What are your suggestions for the rules and maps?

Here are ours:
1) We nominate 5 players, you nominate 5 as well, then we draw lots and create 5 pairs. After that, each pair plays until one of them wins two games. Then, the total score is calculated.
2) I suggest playing on fan-made templates. Fortunately, they can be played without mods. The layouts are available, and everyone can study them.