Having your honeymoon after the wedding sounds great....almost like a "normal" wedding. Enjoy your wedding and remember that you still will get to have an amazing honeymoon...just delayed.
I hope you get well soon. I had a major surgery last year and it was a stressful time period. I couldn't imagine planning a wedding as well. Try not to stress about the details though...your guests will be more concerned with your health than what you will give them.