Is this ok for my baby columbian rainbow boa

So last week I got an exo terra 12x12x18 all glass enclosure and it came with a few fake plants a water bowl thermometer hydrometer and a lighting fixture, it was a good price couldnt pass it up. Was wondering if its big enough to house my baby columbian rainbow boa. He is aprox 12-14 inches. Dont plan on keeping him in this inclosure for the rest of his life but I dont want to keep him in the tub which is where he has been since I got him but I cant see him unless I take the top off and dig for him

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