I'm using version 4.0.0 of SmithCart. I've set up the cart to use Authorize.net for payment verification. I would also like to add PayPal as an option. However, the way I read it, the Standard version never confirms approved payment back to my site. I also need the customer to enter registration credentials during checkout. So it seems that I can't use the add PayPal option. My question is, can I use PayPal Express Checkout or PayPal Pro in addtion to Authorize.net? It seems to complete the process the way I need it to. How about other ways for me to meet my requirements?

Thanks in advance.