Sending invoices and receiving payment

Hello -

I'm a photographer and am looking at Zoho as a possible CRM. I sent this question to the sales office but haven't heard back so I thought I would ask here.

* Can I can accept payments from my clients online or do I have to purchase the Books module? I have an authorize.net account.

* does the professional level have automated reminders to clients for outstanding invoices?

* is there a way to take leads from a wordpress site?

Thanks