My TWO CENTS
I am new to the party, and after doing my research I built a 20" 22 ARC. So far shooting 75 ELD-M's through it. I also have some of the new 62 ELD-VT Bullets as well as plenty of 80 A-Max and 80 VLD's to work with. I am totally happy with my 22 ARC at this point.
With that said, It looks like you have a Very High Quality Build to work with. If I were you I would work with your 224V before ditching the barrel. I would probably down load the 224V a little to help with brass life, and enjoy working with it. I am doing the same with my 22 ARC. Factory ammo seems to be plenty Warm. I pulled down my second 50 rounds and down loaded it for better Brass Life.
You built your 224V, so all you would need to do is get a new Barrel and Magazines. You can do that any time, and a little later in the game will probably have more barrel options open to you.
First off "today" if you went with a 22 ARC you will need to buy factory Hornady Loaded Ammo for Brass. It will probably take a couple years for Brass to show up on the shelves. Ammo is just now starting to show up. You have everything to make your 224V run for a long time on hand. You might as well enjoy the Journey working with the 224V.
My advice as a long time reloader. Start working with your 224V like it is the best thing since sliced bread. If you decide it will not shoot up to expectations, or does not shoot well, order a 22 ARC Barrel. I suspect that you will be able to get your 224V to operate at a level you are happy with.
You can always rebarrel it at a later date.
Bob R