Fences and Gates - 2/3 wood and 1/3 vines????

I am faced with a small problem a four foot one to be exact. I currently have a 4' fence surrounding my back yard and it is very well past its prime. I need to replace it and I wanted to go with a 6' dog ear but after talking with a neighbor I believe that I would have him and the zoning board giving me nothing but problems. So, I came up with what I think mught be a solution and would greatly appreciate any feedback.

Replacing the 4' dog ear fence with a new one would be fine and within code. Starting with the first vertical board at the corner of the house, drill a 1/4" hole 10" down in top center of the dog ear. repeat every four feet.
Using 1/4" round stock steel at 30" long, tap rods into drilled holes leaving 2ft of rod exposed above the 4ft fence, repeat in every predrilled hole.
With the rods in place use hay bailing wire across the top of the rods abd perhaps JB Weld to hold the wier to the rod.
About every 1', tie a piece of twine to the top of the wire, using a tac to fasten the bottom to the fence.
Now comes the fun part. 36" long cedar plant boxes mounted on the inside at the top of the fence, each section.
Two honeysuckle vine plants in each planter.
Planned outcome is a two foot foliage atop a four foot fence for a total of 6' of privacy.
Suggestions????

If the planters are going to be filled with dirt, I don't think the fence will withstand the weight. Just plant tall trees or flowers along the fence.

Or use trellis' or lattice etc attached to the fence from the ground up well mounted and that might then reach above the fence and plant your growth from the ground letting it grow up the lattice etc.

I agree that planters mounted way up a fence and designed to hold growth permanently will eventually fail one way or another.

After thinking about Pulpo's reply I am rethinking the planters. I would rather stay away from trees or shrubs as my yard is rather small as it is and I think using them would only take up more space.
Also I would like a plant or vine that will withstand Michigans weather. I could use 2 ft trellis' to allow vines to climb.
Found a pic of what i think might hold up. Not sure but those look like 2x2's as supports.
http://www.gardengrapevine.com/MontyPlanters.jpg

Those are 2x4s as supports. They may help but it depends on how well the fence is in the ground. Structure is from the bottom up. If you grab the top of one of the posts & move it side to side, how much play is there?

Also the plants in the picture shown are ferns or similar,which are not climbers and are not nearly as heavy as what you propose.You can clearly see planter boxes inside the wood structure which suggests non-permenent placement.

Your plan is to plant something like honeysuckle which will grow,become heavy and make the situation very top heavy with a plant designed to be there forever.

I agree with the idea of testing the fence.If it isn't VERY solid you should plant from the ground up.

Think I will just get the fence up and go from there. I don't think I have a lot of time left in the season to do the planters anyway. I may go ahead and apply for a a 6ft fence permit and see where that gets me.

Something else to consider when putting plants on or near a fence is the damage they can cause:

1. Vines will grow between the boards and force them apart, often leading to broken boards or loose panels.
2. Flowering vines often attract ants that will find a fence an attractive living area. They often burrow into the wood and significantly shorten the life.
3. Planters on a fence require frequent watering. Water on your fence can lead to accelerated rot and decay.
4. Anything heavy on the top of a fence will usually result in it leaning over time.