Use the resources of your alumni and determine what expertise you have in your group. Expand the dream. You need to understand why this will help the undergraduate chapter, and explain it. A guy with two kids in college and a house mortgage and car payment has no cash to spare, but he may have an expertise that will move the project along. Get as many people involved as you can.
Many hands make light work.
Here are some things we have learned along the way. Always remember that you are dealing with volunteers. It will always take longer than you think. Things cost more that you thought. The city and state will ask for things you never dreamed of.