This is a good idea ... I think you should include Satoshi's whitepaper as the first (foundation) article in your inaugural issue ... it hasn't been published in another journal afaik, except on the web obviously.
I agree with the above.
Regarding your journal, what exists as far as certifications (does it need to be?), is there a place where the journal can be peer reviewed for academia? How do we get it into Google Scholar as a citation source? What other printed/online journals of this kind already exist, that we as a community should help try and get the attention of for marketing/pr purposes?
Somebody suggested we eventually (I think we need to get going with at least one issue first) get it included in
http://cabells.com/review.aspx so that university researchers could publish in it and have it count toward tenure. But that's later down the road.
I'm not aware of any other crypto-currencies related technical publications -- everything that exists seems to be more "pop magazine" style. But do let me know if anybody is aware of anything else.