Sure, I'd be happy to weigh in. I think top 10 may be tough, but top 20 seems reasonable, perhaps dipping into the 20-30 range for one safety option. I always encourage applying to a range of programs to diversity your chances.
I'd say your academic track record, particularly your Quant skills, is the only real concern. But it sounds like you're taking the right steps to take supplemental Quant courses. Is it possible for you to retake the GRE? That would be another option, to try to boost your Quant score up to the mid 160s.
Working at a TV network may give you an edge because that's not a very common pre-MBA role and schools are always looking for diverse classes. Just make sure you've got examples of the skills b-schools are looking for such as leadership (of people or projects), curiosity, initiative, teamwork, critical thinking, etc. In particular make sure you can demonstrate that although you have a non-business background, you still have a business mindset (e.g., you understand how your role impacts the network's bottom line, you've participated in strategic decision making related to the network's vision, etc.).
I think the other area for you to think some more about is your career goal story. Schools are open to career switchers but it may be a more logical story to tell in your applications to focus on the media angle. You could still be open to opportunities in real estate once you get in but schools may see you as less of a risk if they know that your immediate post-MBA goals relate more closely to your experience so far. Just something to think about.
Good luck with the process and keep us posted if we can help!