Not sure rebuilding a VW type I would be that beneficial. But why not look for another 2.7 or 3.0? Swap for your current motor or rebuild it. That would mean you could take your time to pay attention to detail on the rebuild while still enjoying your car. Also, you could then resale an engine to help defer the costs. I have a complete 2.2 that I've used to practice taking critical measurements, modifying (porting/polishing, etc.) and assembling.
Nothing like working on a Porsche engine to learn how to work on a Porsche engine
