Brett, I agree with everything you said, except the part on intravenous administration. I suspect (as with sodium biocarbonate) that oral administration works just as well at increasing tumour PH when it comes to cesium chloride without having much impact on blood PH. (Dr. Mark Sircus covers this in his articles, where he partially disagrees with Dr. Tullio Simoncilli - see drsircus.com - see his category on sodium bicarbonate).
Blood PH is very tightly controlled by the body for a GOOD REASON and intravenous administration is more: complex, dangerous and expensive.
The key is using LIQUID cesium chloride, not powdered as this is more absorpable - and of course don't forget the added potassium and you won't get many side effects.