Just to be safe?

[UncleChester]

Thank you very much but since I don't have enough money to buy a whole new virarium at this point I will do the 30-60 day period for the new one to be alone in a small small tank that I wouldnt want him/her to live in forever.

You can always wait until you can afford and have a permanent vivarium setup before getting a new frog. There are often cheap tanks going through craigslist or kijiji if you're patient. Is there any reason you need to pick up a new frog today?

Plus my female gray has been very lonely since my other gray left so I hope that I can soon put them together!

Your frog being lonely isn't something you need to worry about. They're perfectly fine by themselves. This shouldn't be a factor in getting a new frog.