[Vultra]

From all the SEing methods I've seen, you can literally build a new computer.

You can easily.
Just takes alot of precautionary methods and skill
One thing to note:
I've witnessed other people getting into this slippery slope of SE'ing for free stuff. They first start SE'ing keyboards from Corsair for the sake of SE'ing (which isn't bad in itself), but soon enough they SE almost all of their digital purchases.  Don't be that person

For legal and safety purposes, I would personally work for the items you worked for.