Looks like a great woods runner. A coupla things....
First, I'd get a good pad mounted unless that's a 28 gauge or 410 bore.. Even in 20 gauge, kick is severe with heavy loads. Bet touching off a slug in that as it sets would make anyone want a pad.
Second, leave the barrel as is. Bobbing it will not save much weight, and this is light,light,light now. And, choke is usually a good thing. Betcha this will make a fairtomiddlin' turkey gun with the right load.
A light carrying strap style sling is a good idea. You may waat/need your hands free.
Enjoy.....