I followed the above advice. Through some luck and timing, I had 38 seeds and jumped over to another of the large asteroids after the enemies fought each other instead of attacking me. I took and immediately went to the small asteriod behind and got reinforcements. I survived a couple attacks, which further weakened my opponents. I then went for another big asteriod and it was pretty much over after that. I got lucky because they didn't wipe me out before I could get started, they didn't throw up a bunch of defense trees and they didn't harass me to the point I was too weak to do anything