The remington 770 has a reputation for wearing out very quickly, mechanical failures and poor accuracy. I know of 2 people that bought them one was sold at a profit before ever being fired and the other has been traded in for a Stevens 200 becuase it wouldn't group well.
Altough they seem like a great deal I'd recomend either a good condition used rifle or a Stevens 200 if price is the reason your looking at this rifle.
That Churchill Highlander is a Turkish imported Hardware Store gun from the 80s. As for the quality, I don't know, the Turks can go both ways.
That's very true as far as quality. I do think though that today Turkish guns are moving up in reputation, especially their shotguns. Although Benelli, Beretta, and newer Franchi shotguns may say "Made in Italy" on them, actually a lot of the parts on those guns (including some barrels) are actually made in their contract factorys in Turkey.
Try to put your tree stand in a tree with plenty of background cover, keep the prevailing winds for that time of the year to your face, and take care of those pesky squeaks and creaks your stand may have developed while sitting in the shed. A good treestand lube can be made by heating petroleum jelly until it reaches a liquid form. Some hunters have reported success by including a cover scent in this mixture before applying it to their stands.