Needsupport -
I 2d Fancymom's comments & add that there is much to be thankful for these days for those who suffer from mRCC. W/ the brain tumor and the kidney tomor removed, hopefully your father will be NED (no evidence of disease) and remain so. If not, there are treatments available. And, he may want to work w/ his oncologist, hopefully a kidney specialist, to go on an adjuvant trial in the hope that it would prevent an further metastisis.
If you go to the discussion at kidney-onc@listserv.acor.org, you will find a group of caring, knowledgable people who will readily respond to the numerous Qs & issues which will come your way in dealing w/ this "monster". Good luck & Godspeed.