Yes, having enough money to start your life together is important. If your savings are 5k then thats what it is and you have to work with that and consider if you really need a fancy or costly wedding? Getting married is after all signing a paper and committing to each other in that way. The answer to this also depends on your GF and her expectations, what you both want out of your lives and whether you are both willing to work hard to make it together. I wish you well.