Advice on which plugins to get

Hi

I’m creating a new site for a friend and he specialises in tarot readings and spiritual elements. He wants it to promote his business and also offer an online booking service for customers to reserve dates/times using PayPal. Ideally this should be linked to a calendar that customers can choose dates from.

What plugins do you suggest I use to achieve all this? Is it even possible to have a calendar that can be edited daily to show available slots that customers can then click on and pay for to reserve them?

Thanks in advance for your responses.