Somewhat contradictory to all the above, but I believe that worrying about wars is over-the-top.
Simply put, war does not cost the global economy as much in lost output as one might think: defence spending clearly rises to balance the effect of lower normal spending, and such incursions tend to be in rather specific regions rather than global. Iran has no friends other than Syria who would fight with it, pitted against the US, UK, Saudi, Pakistan and (potentially) Russia.
AceD3 - have a long think about which schools to use and which route to go before you start (and do the GAPAN test so that you can at least focus on your weaker areas). Why not do it in chunks, working between the modules so as to minimise your debt burden? Devoting a set period of time between contract work to each module (at an airfield with good instructors, availability and weather) will allow you to progress in minimal time.