Weddingbee boards

So as some may already know , me and mr got technically married by a jop at city hall ..and we were going to do the whole greek wedding shabang june 5 of next yr .well now He wants to change the date , he doesn't think we'd have enough by the time the wedding comes . I understand his concern to a point . I deal with the finances though , he doesn't  and i have faith that we can do it. His uncle said that whatever was the balance of the wedding , he would pay for and we could pay him back,Whenever we can,  which sounds great to me. I told him when we got married by jop that i wante to get married on this date , we told everyone , and we already sent out our save the dates ..i know that if i wanted to , i could still move the date to Later in the yr,..BUT i don't want to. We put money down on a hall..and i want to keep the date to it. Now i know we can change this , but again I don't want to . He has No faith on the fact that we can do this and he's not accepting of my suggestion to just have faith. What do i do ? I don't know what to say anymore , this has been an endless battle..so Any suggestions would help :)