I wouldn't look at Bartolini Air, they are too new in the business to have a big enough reputation for your CV to be looked at by recruiters. Plus, the being in Poland doesn't hold well for weather. I'd look at the FTO's further towards the south, with Greece, Spain and Italy being good examples of countries with fair weather all year round and not too costly.
Be wary of the scams though, if they're too good to be true, you should ignore them.
Best of luck.
TheSkiingPilot