I agree ^^^. Should go with 60" concrete meshing at 4'.5" diameter. You will only need 1 stake to hold in place. If you use soft fencing, the deer will push it in to browse upper leaders.
Don't worry about younger deer sticking the head in to browse the lower limbs as you need to prune lower lateral limbs to force their thickening for fruit bearing. I have had larger deer reach over a 3' dia. and 48" high cage to browse lateral branches and main leader.
Plant larger nursery stock, plant fewer trees (as opposed to mass plantings) and spend the $$ for good caging. Remember, with the right cage materials you can use the cages over and over on new plantings once the tree has out grown the cage and you can protect the lower have of the tree only.
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