Hi JAJW,
Congratulations on passing, I got my JAA PPL just over a month ago.
I mulled over the same question as you, but being a month further back it was looking at a longer wait for me - and there's already been one postponement of the date for start of EASA licence issue, who's to say there won't be another.
One final factor you may wish to consider is the following, though I couldn't get any definitive answer from anybody about whether it's true or not (even from CAA). With a JAA licence, you can still add on the IMCr, which when the licence is converted to EASA will be noted as IR(R). It's my understanding that if you get a straight EASA licence, you do not have any route to tack on an IR(R), so your only route to fly in anything other than VMC would be to do a full IR. Now THAT might be worth £73 to you
HTH
Kolossi