Unnecessarily long for who? If you prefer short barrels for use, hey, congrats, you hit a home run. But, some guys prefer longer tubes, and shoot better with them.
I would think the porting would make it a tougher sell.
Those chokes work just fine, you will still have to do some work at the pattern board to find out what load works best-maybe you will be doing some more shooting with a shotgun in the future. For most of us, that would be good news.
Good luck.

Best,
Ted