That decision is entirely yours....it's not hard to do any of the above, but it does take some persistence and daily treatment of the pool. Take a look at this thread when you get a chance--it was written by somebody in very much the same situation as you, and it might give you some insight into the whole process.. http://www.poolforum.com/pf2/showthr...ll!&highlight=
Wish I could tell you it is easier--and it is, without metals in the water--but with metals, those are the choices you're pretty much faced with. Let us know what you decide, and we'll be happy to help you go from there.