Head stone/Memorial/Other Expenses

My father passed away last night around 3AM. I decided to do a fund raiser to help alleviate some of the financial burden off of my Grandpa. He and my Grandma have already paid for the casket, and grave plot, my grandpa said he would pay for the tombstone but I would like to try to raise the money myself rather than burden him right now when hes already dealing with his sons death..   the remaining expenses are just for the funeral service itself, flowers for the funeral, tombstone, laying the tombstone in concrete and the vase they are going to include. Any excess funds will go to my dads portion of rent to help my sister and brother out. Anything is appreciated... May he rest in peace..