....and don't forget that bark. Crummy old poplar bark you say? Met a guy a few months ago that took poplar bark from sawlogs at a landing, filled a gooseneck trailer and got $5,000 for it in Spruce Pine( so he said anyway ). It is used as siding. Must be handled with care, never done it myself ( perhaps I should, eh... )
As firewood, there is usually a point at about 3-4 months after felling, where the bark gets a bit slimy but hasn't rotted yet ( turns from greenish white to brown ). If you can wait to buck the logs the bark will fall off easily and makes long term storage easier. Can still use said bark as nice kindling. You can usually find some this way in landing areas or tops left behind.