I've undone the deletions and made what I hope are all the needed updates and corrections.  I made the entrance way from the south a service road (as there are other properties as well as the farm), the tracks that don't carry public footpaths access=private with gates where I can see them (eg to N ), and all the public footpaths are set as foot=designated, designation=public_footpath on footways and same with vehicle=private where the public footpath is carried by a track. I put the path behind the first hedge at the immediate east of the farmyard. Also had a go at updating the new housing 'Paddock Green' as far as known.  Have a good look at see if anything needs further adjustment, and you can retry changing and/or comment here.