Wanting to build my first AR-15. I came across .223 wylde and was wondering why this wouldn't be the default choice, as it allows both 5.56 and .223 to be fired with accuracy. Secondly, I'm wanting to make it beneath $500, 20 in. and maybe put some wooden furniture on it because

>muh wood and steel

Besides Aero, what other recommendations do y'all have.