Hi Lauren,
That combination should be fine. Xiao Chai Hu Tang plus GXZYT might be even more potent from an anti-cancer perspective and fits the points you've come up with. Good luck with this little guy. The only other consideration here is that orange-red tongue. That might suggest a lot of heat, which might make Yi Guan Jian a good choice as well. If fits BL 24, which is a Kidney Yin point, given that it cools while nourishing Liver and Kidney Yin. I've seen the formula work well for some cranial abdominal tumors, but would still use it alongside one of the other two, perhaps XCHT.
Those are my thoughts for now, anyway.
Steve