Since you are trying to do this on the cheap, I would look at trying to buy some clothes used. For example, you can buy M-51 Army Surplus wool trousers for around $25. These are medium weight wool trousers, hold up to abuse, and are quite warm. Likewise, look to buy a Pendleton Wool shirt on-line used for about $25. Buy some good synthetic wicking fabric long underwear bottoms and tops to go under these things. You may be able to find some sort of polyester fiber-filled vest or parka at the Salvation Army or Good Will for cheap. This polyester (or other synthetic) retains much of its warmth even when wet, unlike goose down which has little insulative value when wet. Wool, too, keeps much of its warmth values when wet. Furthermore, wool is pretty silent in the woods. These are important considerations in hunting garments.