I think you are very fortunate at just 1,500 hours and already on the right seat of an A320 (that is what I gather from your post?) if that is the case my question is, is there any chance to an eventual upgrade? If there is I would stick it out until you get at least 500 PIC on type, if there is no chance to upgrade then I can see your desire to move along, in any case your total time is quite low for anything other than an F/O position which you already have, any other low time F/O position available would be with not the best T&C's so to move sideways you might as well stick it out at you current gig a little while longer and gather more experience. Probably not what you wanted to hear but from the little information you provided, that was my firt thought.