My experience is similar to yours...learned on a double, love the top tang safety.
I'm right handed, bought a used Ithaca 37, loved the bottom ejection thoiugh not the cross bolt safety.
Now a BPS.
Top tang safety and bottom ejection.
I'm small, so bought the 20 ga youth model with 22" bbl.
Over decoys, with IC choke, works like a charm.
Just don't take any long shots.
SAFETY FIRST: RELAX!!!
There's lots of birds, and you don't want to have to explain to your buddiy's wife that you just made her a widow.
Control the muzzle, and check the safety.
Your life depends on it, and so do your buddies'