I don't mean to be rude, but I think your nuts trying to protect the laptop this much,
A. it makes it bulky,
B. it looses it's superior asthetic qualitys
In my opinion you're much better off using the laptop as intended, even if it does get the odd scuff, because at least then your getting the maximum enjoyment out of it using it the way it was designed.
In the end you'll probably end up selling on that laptop to a stranger to partly fund your next upgrade, and you know, chances are they'll just use it normally and all your efforts to protect it will go down the drain anyway.
I used to be like this and I can understand people wanting to keep something like a MBP new and nice, but really I think the best thing to do is be careful with it, even if I end up with a few marks on it, I'd rather have been the one to put them there instead of the careless stranger I sell it onto!
Regards,
John