Congrats! I think whether this is the right decision for you is completely dependent on your specific situation. I personally think the more work opportunities you have, the better, especially when it involves having direct interaction with people. It's hard to get "clinical" experiences before OT school but it's an incredible advantage in helping you get admitted and more importantly in seeing if this is a population you could see yourself working with in the future. With that said, whether it's a good idea to work during undergrad depends on the hours, your schedule, and your time management skills. Being a behavioral tech can be different depending on the workplace so I'm not exactly sure what it entails in your position (personally I don't like ABA but that's besides the point), so I would make sure you know exactly what your responsibilities will be. I worked all through undergrad so I can't really imagine not doing it, and it was a key component of my college experience. During my last year I worked at a community-based group home where the residents are adults with intellectual/developmental disabilities, and I found it not only more educational than a lot of my actual college classes but also very helpful in deciding to become an OT. Worst case scenario, you don't have to stay at a job you don't like or can't handle. So there's no right or wrong answer here, just consider all the factors and make sure it fits into your schedule.