Left-eye-dominant-shooter-who-is-right-handed-but-shoots-long-guns-lefty here. I switched from a lefty SBEII to an A5 at the end of 2016. I can’t tell you how glad I am I made that switch. I’d say the A5 is one of the more lefty-friendly, right-handed shotties out there. Safety is real simple to reverse and the auto-load makes a match saver no longer necessary as you stated (IMO, YMMV).
I also suggest to upgrade to Tom Knapp sight over stock, get the port opened (I sent mine to RCI), slap a tube on it and you’re good to go.