My Forum

4 Months, I think, so plenty of time.

http://www.ironmanlanzarote.com/registration

Registration opens today... 1300 GMT

Yes achievable.  Check out training plans on this site.  For success do 1 interval or fast session and 1 long run (up to 15 miles for a half i'd say).  

http://www.chainreactioncycles.com/SearchResults.aspx?Search=wetsuits&CategoryIDs=1492,2058&SortBy=Price

Quite - my point was that I am fit (in terms of health) and that it was not a lack of fitness only a lack of technique and, given my now year old wetsuit, kit that caused my to finish stone dead last.