Impreza :: Difficult Cold Start - Once Running It Seems To Be Lacking Power Across Low Rev Range

My 97 Subaru sport has trouble starting when left until cold, it always finally starts, but wont rev at all until its has been running for 20-30 seconds.

Other symptoms include....Once running it also seems to be lacking power across the low rev range. but then seems fine above 4k rpm.

If i get stuck in stationary traffic for a while, the check engine light comes on and i lose all power, it hardly pulls its self off to a start. But if i were to rev the engine and let it drop back to idle a couple of times the light goes off and i get power back to set off.