Don't bother with the ExoTerra tanks. They are WAY expensive for a boa who's going to outgrow it in no time at all. Your boa is going to need an enclosure of 4x2x2 FEET eventually. Might even have to be 6 ft long if Poprocks is a female. Check out www.animalplastics.com. Their terrestrial cages are great for boas and they have their T8 on sale for only $150. That would do her for a looong time and could even be ok for her final adult enclosure as long as she could get out for excercise a lot. Boas are not like balls. If you provide her lots of hiding places, she could move into that size now.
The other option is to make an enclosure. If your dad can build something for less than $150, go for it! If you use wood, it must be properly sealed to help prevent mold. I like sheets of 1/2" extruded PVC. This is what the AP cages are made from. It cuts and screws together just like wood and you won't have any mold issues. Holds heat and humidity really well. Most good home improvement stores will have it and will cut it to size for you.
Tanks really aren't appropriate for boas beyond their first year. Glass can break and does not hold heat well and the screen top allows too much humidity to escape. Boas need bigger and better accomodations!![]()