Actually, you'll die horribly. One thing colonies SUCK at with low pop..is making money. You'll be hemmoraging money horribly. I always start with a custom race that has the SuperBreeder perk so that i can get my colonies out of the gutter FAST.
Just like to mention, GC2's AI can be BRUTAL sometimes. I think it was Challanging skill level?. .. There is a difficulty level where all the restrictions are off and they still get no artificial boosts, and that's the sweetspot to play when you're learning or when you want a stable game without some militaristic race rush you with blobs.
In any case, have fun with it, build and protect your Starbases, don't make Star Terrors since that cheapens the game, and really do try with all your might to understand what's going on in the game. The background machinations the AI makes is outstanding and can really enrich your gameplay.