Trigger weight preference is very much a personal thing, and needs a lot of aspects taken into consideration. Gloves? Cold? Fast shot opportunies? This thread will get you personal opinions for each individuals style of hunting.
6 lbs scoped ready to hunt? If so, thats pretty light. Means a bare rifle in the 4 lb xx oz range.
If that's the case, it's going to be challenging to shoot it well at long range. I usually like lighter rifles to have a few less oz's on the trigger pull, I would personally go for around a 12-14 oz trigger. My 9.5 lb hunting rifle has a trigger Tech diamond 2 stage with a flat shoe, with a combined pull weight of about 18 oz, and is where I like my triggers for anything more than an ultralight rifle. Again, personal preference for how I hunt.