Wordpress Accounts, to cPanel, to Paypal

So I've been designing websites for business and friends for a little bit. Now i have a re-seller hosting account and need help with one thing, or just suggestions really. Is there anyway I can automate the whole thing to work? Or is this going to take me 100s of eye scourging man hours to fulfill? I want people basically to create an account, which gets paid through paypal, which then creates a cpanel account for my client. Ive been doing it manually as Ive been working face to face with my clients, but I want to be able to accept payments through my website which isnt hard. Its the creating a cpanel account automaticly that is making my hair age quicker then a middle aged Asian women. I know if I take to long to create the cPanel account, the customer is going to complain and ask for a refund. I really want to avoid this, and start out with a good name and good tech support. Thank you advance BHW!