[HELP] 301 redirect with blogger

I have a method that I would like to try but need some help to 301 redirect from a blogspot (blogger) site

I will be buying an aged domain with a bit of PR and putting an article on it, I will then make a blogger site and put an article on that, wait until both sites are indexed, then 301 redirect the aged domain to the blogger, then redirect this authority blogger site to a new domain

I have managed to find a java script that will redirect the blogger to my new domain, but will this carry all the link juice and PR etc that I might have got from the aged domain across to my new domain?

If anybody has a better way to redirect or can tell me if this works would be helping me out !

read this

hxxp://stackoverflow.com/questions/6798259/options-for-301-redirect-from-blogger