Not to say it's impossible, but you're going to have a .001% chance of getting it to work for 5 min, let alone for 5 months.
Let's face the cold hard fact. I ahte making assumptions, but the simple trueth is that if the vet's success rate is 50% or less, I hold you with no chance of having it right.
Now I'll spot you that you learn very fast and you'll kill only one CPU.
You've allready spent more money replacing that than a top end block costs.
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There are several ways to cut costs and get more into DIY when it comes to cooling. However the line that should never be crossed IMHO is reliability.
I don't keep track of them, but I also can't name you any DD cooling project I've heard of that lasted a year... Can anyone else?