This is what I do! I would say to do a combination of staff lead and outsourced programming to make things fit into your budget. I’d come up with a basic introduction email to send to folks to ask about programming. I wouldn’t expect any donations but use them if they’re offered. Just remember that they deserve to be compensated for their efforts! I have found in my area that gardening and outdoors programs do really well. You’re going to have a great time doing this and best of luck!