Functionality check

Hi team, just checking in with a pre-purchase query as I didn’t hear back via your website contact form.

I run a not-for-profit site that helps provide food to locals in need. They run a community pantry that is open for 20 minute blocks so people with a booking can come by and ‘shop’ for some basics (no charge of course). I am looking for a plugin that will off the following features and need to understand which version we need and also whether you are able to help us out with an NFP discount or such for the required version. We are self funded by donors and rely on businesses etc to help out where possible.

Features we need to have:
Limit bookings to only 7 days in advance (and Prevent bookings in the past)
Auto-confirm bookings (users are not logged in)
Multiple bookings per time slot (we allow 6 x people per 20 minute slot)
Send confirmation email to the user with an ‘add to calendar’ link as well as a link to cancel later if required
Google Calendar synchronization to our single google calendar.

I hope you can help me with this important info before we install

kind regards

Steve