Hmmm....very interesting never thought of carrying around a couple stacks of hay and a chest. one question when you put items in the chest and lug it around with you do the items in the chest add to yer inventory weight?

Only if the chest is open. It's too much of a risk. If you accidently close it and you're over-encumbered, it will vanish! I find it's better to keep the chest at your base and just dump any goods you have trouble selling in it.