No offense, but........
I consider what you are doing.........
EXTREMELY............
STUPID!!!!!!!!!!!!

(Like I said, no offense)
You may have the patience for it
.......
But I don't.
I play on Gigantic (once TA finishes downloading, Immense) size galaxies.
I like to play those long dragged out games. Abundant everything, and 5-9 Major races
. And fast research speed
. And 8 Minor Civs thrown in there as well
. Ever since I found out how, I've been selling them colony ships, so that they can colonize planets
. It's an easy way to make moolah
, and it turns those pathetic Minors into Majors
. And I must say that it is amazingly fun to have an all out war with one of them
. It acctually makes the game more interesting. Try it out the next time you see one (if you don't believe me of course).
I know what you'll probablly say......
"How do you not lose patience doing all that micromanaging of your planets and ships?!"
The answer is, "I do"
.
It's really tough not to throw your keyboard or mouse at the monitor
, or throw your monitor altogether
.
But once you start raking in 5 Million BC's per turn
, you are elated and relieved that you did not spaz at your monitor.
But to answer your question.......
If you also play on Large+ galaxies, I'd pump out scouts, sending them in all directions.
And as soon as you find a habitable planet, send a colonizer over there immediately. You never know when another race might take it.
The only way, of winning this way (in my opinion) is to research, so you're on the right track. I'd research up to at least the end of the Impulse Drive part of the tech tree. Afterwards researching to the end of the life support branch. I'd also research sensors fully. It helps find planets faster.
Eitherway, I still think you should play with a higher degree of habitabillity. And if you don't already, larger galaxies.
Till next time.........
Watch out for the Rock Brigade!!!
(I'm tellin' no lies to ya mister
, they might even try to steal
your sister!
)