I've been reading this thread since you posted. It is nice to see you are making progress.
I'm not a pro either, but here is one of my recent experiences in a 2v2 (quick start disabled) online today. I managed to colonize 6 planets on my way to the 7th (no trade yet), while building 15 kodiaks, 3 carriers and destroying 1 orkulus in my grav well and one second health orkulus (w 9 kodiaks and 3 carriers, lost none) in my opponents grav well in <40 minutes. Now that being said my partner had 4 planets was pressed lost 2, took back the third and spammed scout (20+) and LRM(28+) with just those three planets and beat back a disciple/Illum rush including a pirate raid. They gave up at this point.
I'm not recommending spamming kodiaks (although it was fun), but it doesn't always pay to aggressivley expand if you are needing fleet especially if your opponenet is just a few jumps away.
I guess my point is try not to get locked into a single script, have a a general plan of attack/colonize based on your scouting and be willing to adjust based on what your apponent does or exploit if they don't react correctly.
On a side note. It might be useful to use the close encounters map to learn how to effectively build up fleet with a small number of planets while being spammed constantly by the AI. This is also a good map to learn how to use the different capital ship abilitities as they are more critical to winning on this map. For example, try a carrier cap/LF rush on the AI. Eventually you will get good enough to beat an unfair AI on this map.
Good luck and have fun.