Originally posted by vk4akp
Please keep in mind that I am on a POV budget and can't afford prime lens's etc.
Not sure what "POV" means, but if you'd eliminate the unnecessary items from your shopping list, you could easily afford a prime or two or three. For instance, as far the filters go, unless you have already identified specific needs, it's unlikely you'd need anything on your list. I mean, if you want to get into IR, sure, you'd need the gear, but it's hardly something most people would own just to have it. A polarizer comes in handy occasionally, true, so by all means, get one. But the macro sets are pretty much worthless, UV filters completely unnecessary, and with the basic slow zooms you have, I can't see why you'd ever need an ND filter, much less a whole "set" of them.
As for the TC, I doubt very much any 2X TC would perform nearly as well as simply cropping your image down. And if you plan on getting a mirror lens, you certainly don't need a TC for your 50-200, but of course, a mirror lens *is* a prime. Not sure how much you were looking to spend, but from what I've seen, nothing under $300 or so would perform any better than simply cropping your 50-200 that much more. Also I rather doubt any "fish eye adapter" would produce results worth whatever you might spend on it. If by "macro adapter" you mean a better quality version of the filters you already listed, well, sure, the Raynox does well enough for the price.
Basically, the Raynox and the polarizer are the only things on your lists that strike me as worth spending money on. With the money you'd save not buying the other stuff, you could easily afford any of several primes - manual 28. 50, 100, 135, or 200, or even the FA50 or DA40.
Now, on the list of actual items you are looking at, the Zenitar would definitely be worth looking at. But it's not an adapter - it's a lens. A prime, at that.