It is what it is and it’s your money and priorities but speaking frankly having all those guns in your inventory and none have a quality optic is not the way to do it. When it comes down to it, as the others have just said, all you really need is one solid rifle and one handgun. In your case, what gives your more of a tactical advantage is a reliable optic that has been tried and runs true. If funds are tight I would personally sell one of your guns, the one you use the least, and use that money to get a better optic(s). Like I mentioned elsewhere in your post, SIG makes good optics and you can find a nice budget red dot from them for under $150.