Good luck Pa on the buck.
As far as asking permission: the liability form and bow-only are a good start. Landowners do not relish losing control of their land. If possible, ask only permission for yourself, maybe ask to hunt only for one or two days a week. If it makes sense, offer to do some work around the place in exchange for hunting. Always be courteous, and thank the owner for their consideration even if you are turned down.

-fsh