Hello everyone

I'm looking to do a small local production of the musical Tick Tick Boom. I've never gone through the process of acquiring the rights and running a show, as I have usually been an actor on stage and therefore, have a few questions. How much money am I looking to spend on a smaller show such as this one? and what flexibility do I have with the book? Can I omit lines or make small changes to certain lines if it doesn't affect the story? And finally, am I able to buy the rights as a singular person as oppose to through a theatre company?

Thanks so much for the help everyone!