Hello,
I am a freelance developer with a focus on Wordpress. For your site, since it needs to be launched quickly, I would build the site with a commerce compatible theme, customizing the colors to fit your business, i.e. kid friendly. Also since I am assuming you would like to take payment on the site itself (as opposed to sending the user through paypal, if this is incorrect let me know!) you will need to purchase an SSL certificate and set that up on the hosting server. If you do not already have a webhost, I provide ecommerce hosting at $30 per month which includes the purchase of an SSL certificate as well as setup on the server. The site can be launched tonight and ready to start taking orders soon after (the ssl sometimes takes a little while to process). I look forward to hearing from you and hope we can work together to launch your site!
Ryan Edick