So you’re going to replace the barrel and the handguard? Unless you want to replace the barrel nut as well, you’re going to want to stick with an Aero handguard. Aero makes (made?) good stuff, but if you are replacing that much it will almost certainly be cheaper to get a stripped upper, assuming you can find one that will ship to you. With this one you still need to get a BCG and charging handle.
Not a bad plan. You have to get a BCG anyway so this way you can get one with a larger ARC bolt face and not waste money with too many parts you don’t need.