I think you cannot afford to leave on your own young Skywalker... Its best to move to another place with a new roommate since you don't like your current one. Then you find a job and save up more than $45 a week. From what I got from your previous post, you are only going to save $45 but you are spending $75 weekly (you're -25 here).
I have a 150 gallon and I only spend $6 every two weeks for food. I use the $3 dechlorinator for water change, I'm assuming I'm paying about $25/month for electricity, and maybe $5 per month for water. By the way, my smallest fish is 10'.
To cut it short, be patient young Skywalker... You need to live within your means. If you absolutely have to move because your roommate is a douche, by all means move as soon as you can. Get a roommate that you like, just keep one tank, and save money for whatever reason you have just don't let it be more fish and fish supplies.