2500 hours is pretty much a minimum, even for FJ pilots. Remember, you are competing against Airbus and Boeing qualified people with three times your hours. The days of FJ mates getting a fairly easy ride into the company are long gone. That said, nothing ventured...!
Assuming you are rejected for hours, there are several companies that would happily consider you. I'm not aware of any overt anti-military bias at company level, but you will experience it from some individuals. Steer clear of WIWOT stories and negative comparisons between civilian and military life and you shouldn't get too much grief. Save your two-handed conversations for Sqn reunions and the odd day when the other pilots on board share your provenance!
As for long-haul and what it's like, stick 'Virgin' in the advanced search dialogue, look at titles only, and this forum only, over the last year; you'll get plenty to read.