check out the autohome overland. i've got it and love it. the large size has more than enough room for two adults and two kids. i've got a two year old thats been camping with us since she was 6 months old and up and down the ladder is easy. very stable. good luck..
harbor freight sells disposable tools. you need it, you buy it, you use it, you throw it away. almost everything they sell is junk. if you even think you might use it again buy the best you can afford.