Yep, you'll be set up fine. Just remember the 2.5 gallon I showed you has a hood and a light, and a filter. Also, you can probably buy that stuff at Walmart, and save some $$. I got my 2.5g tank from WalMart, and it has worked fine.
Here is a pic of my betta, Floyd, in my 2.5 gallon aquarium. I...