Joe: I had a fowler made for me as a surprise present. I has a 30 inch barrel, which many here would call very short. I don't. I shoot a 30 inch barrel on my modern shotguns, including the break open actions, and the length works for me.
Because I am Left Handed, The lock is put on the wrong side. That took care of the " PC " nonsense. The wrist is thicker than many, because I don't want to see a break occur there, much less any cracks, as seen so often on the more skinny, English style fowlers. I have big hands, so the thicker wrist works for me. The lock is a siler, and the trigger guard, buttplate, and pipes are English styled. The barrel is half round half octagon, with enough metal in the muzzle to allow jug choking if I choose to have that done. The gun weights about 7 lbs. The butt was left as wide as the cast buttplate would allow, to spread any recoil over a wider area of my shoulder. The gun fits.
If I made the gun for myself, I would probably have asked for a 36 " barrel, but I like the 30 " barrel just fine. For a 20 gauge, the gun swings well, but has enough weight to hold steady for aimed shots. I do have a rear sight on the gun, and that makes a difference, but not in wing shooting. I am used to holding a 6 o'clock sight on targets and I find no problem hitting birds or clay targets.
I think you have received some fine suggestions for kits to consider. The Siler fowler kit is terrific, and others are also offering fine kits. But, ultimately, this is a gun for you, and not something you are making to sell. Make the gun for you, and how you hunt, and shoot.