HELP! Wedding Location Problems

Most of my family lives in Hawaii. It would be ridiculous to ask 40 to 50 relatives to fly to the states and pay almost $1000+ on airfare, hotel and a rental car for like 3 days. So my mom proposed having the wedding on my grandparent`s beach front property on Maui. My relatives would pay at most $150 for a plane ticket. The only problem is that my fiance`s family could never afford it. Would it be selfish of me to have my ceremony to help with my family`s financial situations? Should I even attempt to do two ceremonies/receptions?