You should be able to take off and land 6 or more times in 4000 ft - if I can buy a parcel north of our property I could probably get 3400 ft. right now it looks like about 2100 ft.
I've got a good friend with a RV-7 and several others with other RVs flying or in process. Mine has been dormant for several years.
Thanks for the tips - I'm concerned it won't be big enough, but I also didn't want to buy something worn out and have some huge repair bills. I feel very good about the condition of this unit. My objective is to clear out some growth around the structures on the property, clear some fence rows and clean up an old orchard.