Like with life and ponds balance is a good thing with tractors. You need the right balance of equipment. Too big a tractor can't go where you need to , burns to much gas/diesel , and breaks to small of attachments = not efficient and dangerous. While too small a tractor can't do what you need , can't safely employ the attachments , gets you in dangerous situations and breaks under stress. Best advice seek balance and compatibility but if at all possible insist on 4 wheel drive.