You should probably order seeds. @Midweek Song will hook you up. Minimum of two freebies with each order, stealth shipping, great customer service, seeds typically germ in a day or less and break ground in 3. 6 days delivery from UK.
Just use your debit card. They accept Master and Visa. Also, no, you should be starting with feminized photoperiod seeds. Autoflowers are kind of difficult.
Autoflowers, you have to start in the final pot you plant to flower in, you can't clip or train them, and if you fuck up the slightest, any recovery time will take away from your final product.