All points redemptions are for the standard rooms - in all hotel types.
When an upgrade is available you'll see an upgrade option using additional certificates (points) accordingly. If you don't see anything like it than it's probably not available for the dates you searched for.
It might be a good idea to try and call the reservations line as they will be able to assist you better.
First and most important......AWESOME NEWS, congratulations on him being done with his chemo and radiation therapy. My prayers are in hopes the cancer will be completely gone.
My Father-In-Law went through radiation for prostate cancer late last year and we got great news a week ago that he is cancer free!
Call the hotel and tell them of his story and of course yours and ask them for what you want. Having stayed at the Ritz Kapalua I will tell you they have amazing suites and the property is gorgeous even though not directly on the beach. Let them help you with your request and go from there.
Again, great news and keep smilin!