I think the correct answer would be a matter of your preference, but were it me, I'd probably flush now and get ur harvest over with. Mostly cloudy with a few amber has been what I was advised to look for in the past, and the seeds i got actually stated on their package XX weeks for flowering were suggested.

I know that if you wait until mostly or full amber, things are breaking down and it's a different kind of high.

Also, took a quick look via Google and found:

Ice (Indoors)

Newcomer, crossbreed N.L.#skunk special, strong.

Flowering period : 8 wks
Harvest time : -
Height : 100-150 cm
Yield : up to 150 gr