I am 16 years old and have been asked by a neighbor to give hime a quote for cutting down 1.75 acres of brush. It's thick stuff, with vines and small trees. I have a chainsaw and a brushcutter to do the work. I am wondering how to charge (hourly, or flat rate), and what my price should be for each option. I would like to continue this business in the future, and any advice for any kind of lawncare or brush clearing work would be greatly appreciated.