Client information collector Payment processor

Hey Guys,

Fairly new to WordPress, but absolutely love it so far!

I was wondering what is the best way (plugin or whatever) to set up a registration process where I can collect personal details of my clients and also accept credit card payments in 1 simple registration process kinda like:

1. Client clicks “SIGN UP NOW” button

2.Goes to registration page where client enters in details (name, address, email, phone etc.) and selects package type (silver -$50/mo, gold $100/mo, platinum $150/mo) and this all gets saved in a database (within WordPress or wherever) and then client clicks “NEXT”

3.Page automatically goes to Paypal where they enter their creditcard information, they get an invoice and BOOM, done. (I have a business paypal account)

Any help or advice is greatly appreciated, thanks guys!