The two-turn ringworld will still cost you 2&1/2 million of each resource. I don't think that you can produce that much, AND research four or five SM levels all in 30 turns.
One thing: If you don't save and reload, then things become much more interesting, since you have to live with unforseen consequences, and make the best out of what you've been dealt.
I am not very happy with the direction I chose to move in; 40% value is an excellent planet compared to what I've got!
But, I live with it, and try to find cheaper methods of defense. The three Dragons I can support are dedicated to doing capture missions, just for scrap minerals
