Hi Czech JellyHead,
Both JAR - FAA are very good, FAA will be much cheaper to do, unless you are company sponsored for JAA..
But doing FAA PPL - convert to JAA PPL and then start working on your JAA CPL IR ME is not a bad idea at all. So you've already have both faa/jaa
PPL licence and with some 120 hrs FAA, you already have more hrs, and doing jaa in a flight school, gives you min. 200 hrs, so you'll have about 320 hrs after completion of your trainig..which is not bad at all
But you either go for full JAA ab-initio training which takes you from 0 to frozen ATPL
or FAA from 0 to CPL ME IR (+ instructor ratings (not obligatory)
both faa and jaa, 'i think' are accepted almost everywhere in the world. if you really want to work in europe not outside europe I should go for the JAA
cheerio