There is no way to prevent mold on an outdoor grow?
Not any good options really. Things thing you can do that help some, like calcium carbonate, but that barely works. You can use a systemic fungicide but you wouldnt want to because that will harm you a little if you smoke the bud and harm you a lot if you make a concentrate like honey oil out of the bud.
You can put up tarps to keep out the rain, but then you block out the light with it.
Mold is like fighting the Borg. You can resist it, but it is futile more often than not if it comes for you. Many of us here have horror stories about whole crops being wiped out. Its happened to me a couple of times. One time everything was going great, it had been a sunny year with little rain, went on a quick vacation and came back to everything brown and dead from the complete take over of the mold. Apparently it rained most days I was gone for most of each day.
Other years it's a creeping problem. It sets in slow and you feel like your doing a good job going out each morning and shaking the dew off the plant, removing all leaf with powdery mildew on them, removing the buds that get mold as you see it, and as the last 2 weeks drag on when it's still too early to chop it and have anything worth while, you end up with 60% gone to mold.
As much or more than any other factor growing outdoors is knowing when the wet sets in for your area and selecting a strain from a good breeder if at all possible that will finish before it's too late.
That's part of why autos are becoming so popular with some outdoor growers.
Anyways, have fun with your project, I'm sure your gonna end up with something to be happy with out of it even if you end up cutting it early. I do suggest that you just buy some seeds online and have a better experiance for your indoor adventures though. Growing is work, even if it's fun and easy you put in hours, and at the end of it it's a lot nicer if there is a reward for your efforts. I would suggest something classic and easy like northern lights, or trainwreak. Both are great quality, easy as can be to grow and wont let you down. They also resist mold a fair bit in my experiance.