Yup, opinions are opinions and that's it. Do what you feel is right for you. Yeah, it might cost you a bundle, but the experience really is priceless. I bought my 81 Euro trashed and I am proud that actually got it running and running pretty good. The experience taught me loads and the help here is awesome.
Pictures are worth a thousand words here. If you have an issue or a part you cannot ID, I bet if you post a pic someone will recognize it. Document all that you do as you go with pics. I have a 48 page thread on my forums and i am always going back to it for reference.
Link to my 81 Euro Project:
http://porsche928forums.com/viewtopic.php?f=9&t=4&sid=06df164a2242eb04f71ca427172e2e2f
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1981 Porsche 928 "Euro" Auto Gunsmoke Metallic Flat - Black Interior
1983 Porsche 928S "US" Auto Light Bronze (Copper) Metallic - Brown Interior **SOLD**