I have everything I need except for the cage

I dont have the time to build him one in the next few days...so I was planning on buying a glass aquarium...Ill use it when he outgrows it anyhow..

he is 12-14" (inc tail)

what would be a good sized tank for him for about 1 - 2 months? This will also be a quarantine time..and a time for him and I to get used to one another.

any advice?

thanks!