redirect to buffer sites or retheme domain?

So I'm in the process of planning out a buffer network of blogger / wordpress etc. Going to buy high pr domains and retheme them.

Thoughts on how best to host / make them:

1. hosted blog on blogger name.blogspot.com do a 301 redirect to that site or
2. change cname and blogger backend to use the high pr domain name or
3. host on a server all different c blocks etc on actual domain.

Of course all 3 methods will be created under different user names / emails etc to hide foot print.


Any experience positive or negative of the 3 different options? Of course the first one would be easiest and cheapest, but downfalls?

3. I wouldn't redirect to a subdomain on a free host, pump it with backlinks and juice and then have no authority over it (acct terminated\suspended, etc).

So other then not having authority over it is there any other downside to this method I'm not thinking of?