Do NOT raise the pH; your TA needs to drop, and you'll also tend to restain. Hold the pH at 7.0 - 7.2 until your TA is around 100.

Consider buying some CuLater units:
The CuLator product is a special patented plastic material, contained in a bag that goes into the skimmer, that can slowly take metals OUT of your pool water. We think it works, and have some evidence that it does, but not proof yet. (Not likely to be available locally.)
1 ppm Culator @ Amazon
1.5 ppm Culator sold by Amazon, shipped from Periodic
4 ppm Culator sold by Amazon, shipped from Periodic
Poolmaster 16242 Poolmaster Skimmer Basket Liner @ Amazon (to protect CuLator from being damaged by scum)
Remember, any metal lifted by the Metal Out is STILL in the pool water. Since you have a sand filter, you can remove metals by chlorinating with cal hypo in a somewhat tricky way -- but the CuLator units are much less tricky and seem to work.

Dichlor is a VERY easy way to chlorinate in your situation -- it adds chlorine (good), adds CYA (good for now) and tends to lower the pH (also, good for now!) The trick is getting dichlor that hasn't been diluted with goop that useless or worse (and I mean that literally, not figuratively!). If you have access, Sams Club is the cheapest source, but the Kem-Tek at Amazon is not bad:
24 lbs PoolBrand bagged shock @ Sams Club
Kem-Tek Dichlor 22 lbs @ Amazon