Update on dog with tumor

This sweetie was rescued yesterday and Sandra named him Phoenix. He is heartworm negative and we got him started on his shots and is very sweet and friendly. The bad news is, the tumor he has on his belly is really bad. It's cancerous and aggressively growing and the tissue is necrotic so the tumor is fetid and draining. I don't think it's fair to put the poor guy through all the horrible chemotherapy and treatments that would simply prolong his life by a couple of miserable months. But he is a very sweet boy and I would like to keep him in foster care until the tumor takes over too much and becomes a quality of life issue for Phoenix. But as I said, the wound is very messy and stinky and he'll need a special foster home for his hospice care. I don't think it's fair to keep him stuck in a vet's office for his last months of life so I need help with options. Is there anyone out there who is willing to take this boy in - yucky tumor and all - and give him a good life for his remaining time on Earth? Also, his care (especially the initial costs for testing, biopsy, etc..) will be expensive so we will need all the donations we can get for him.