it should be a little over 2 acres. i had planned on coring back in the back like you described. i have a dozer and backhoe and if it ever rains and i only pack 6 inches or so at a time, i would think it would be good enough? i plan on stripping all the topsoil out down to clay around the whole thing. once i get it logged, i just have to wait for rain. i dont think its rained all year it seems like, and its just powder everywhere around here.