I agree with Doglover on this one, it really doesn't sound like you should be getting a dog right now. While I'm sure you might be able to offer it plenty of love there is so much more that a dog will need. Since you said you are living in a more congested area letting a dog roam free is a bad idea. Plus your dog will be stuck outside all day and once you are in school it won't get the attention it needs since your mom is allergic and I'm sure she won't be spending time with it right now. For now I say listen to your parents then when you are older maybe you can have a dog live in your own house with you.