Snagrio,
You might not want to hear this, but I am going to give you some tough love.
1. Run away form this enclosure unless you are confident you can clean it thoroughly and make it escape proof. Don't try to make it work with those doors and then end up with a lost snake. Don't compound the problem.
2. Own your mistake. Part of being an adult is admitting when we make a mistake.
3. Learn from it. Next time, don't commit until you've seen the enclosures first hand and examined them, etc. Ask more questions, take your time. Do not be impulsive.
4. Do not beat yourself up. It doesn't help. It only makes you feel worse while getting away from #'s 2 and 3.
5. Put into perspective. This may have been a mistake, but no one got hurt, you will recover, etc.
There are options out there for cages that ship in 6 weeks or less (Boaphile, Reptile Basics, some AP stuff, etc.) and are good quality cages. Additionally, height benefits keepers when cleaning time comes, but makes it harder to heat and our BP's could care less.
Take a deep breath, realize we are here to help, and that life will go on. Also realize that as you grow you will have more and more responsibility and times when consequences of your mistakes can be much more dramatic. This is the time to learn to be calm and collected and learn from small mistakes so you do not make big ones, or at least as many big ones.