Welcome to the asylum!
Quiz question: How many ropes on a sailboat? Answer: NONE! They're all "lines". The exception is the bell rope if you have a bell. So, you're all sailored up now. Do a search for used sails. I've seen a number of chandleries that sell used sails at very reasonable rates.
Good luck on the launch. I know how exciting and nerve wracking it is. You'll do great!
Fair winds and fairer deals!