will be my only ar and may be used for all purposes-- home defense, target shooting at about 300yds, the twice a year wild hog hunt, and maybe the odd 3 gun occasionally. is it crazy to spend more on the optics than the gun with the 1-6x 30mm or is it just more sensible to buy a 4x acog and call it done? i looked at both and the rcom 150 sure is nice but ouch on the price. also, does one work better in low or no light?