I beleive your tractor is in the 27hp range right? With that I would get a 50" reverse tine tiller to work up the garden and a post hole digger for planting the trees and fense work. Land Pride makes both of these and are real heavy duty. These two shouldn't set you back more then $3300. You are going to need a sprayer for the orchard but could get by with a back pack one. Not sure if you want to plant the pasture yourself or not. The 50" tiller will work it up good but will take a while, but this should only be needed to be done once.