I am buying a tent for camping alone. I am a 65 yo woman with a back problem, will not be backpacking, just carrying to campsites at national parks at the most. I need a tent that is easy to assemble, size negotiable, prefer being able to see the sky on good days but the rain fly must be easy to add or built in. For camping in Colorado, Texas, other states. price matters but I would rather get something that lasts. I don't think I will get cancer from a tent but in general I don't like things with california warnings. Thanks