Brady's Mouth Surgery

Please Help! My name is Troy and this is my dog Brady. He is a 9 year old cockapoo who I got as a puppy. He has a tumor growth in his mouth over his teeth on the (his left) left side of his mouth. It is a type of gingivitis that causes the tumor and it makes it hard for him to eat. I had this removed once and it was quite expensive more than I can do again on my own. The reason the tumor/growth came back was because the first vet that removed it didn’t let me know that the tooth would also have to be removed. So I have a new vet for Brady that has said the tumor and tooth would need to be removed so it doesn’t grow back. I am asking for whatever help anyone can offer. Brady is a loyal and loving dog and I want to give him the best care. He will need a full blood workup and the growth will again be checked for cancerous cells which all add to the amount we need to do the surgery properly. Anything you can give is greatly appreciated. THANK YOU!!