I'm getting ready to order a stag lefty rifle but just want to make sure I do it right the first time. I'm looking at the model 3L which doesn't come with any sights. Would it be better to go this route or get the 2L? I plan on having some sort of optic but also want BUIS, like the flip sights made by M1. I kinda like the idea of being able to remove the front sight. Also what is a good price for 5.56 or .223 ammo? I can't think of anything else right now but any good tips are welcome. Thanks in advance.