The Zodiac 500 is basically a renamed Pro 4.7 which was previously called Pro 9 Man! You've Zodiac marketing to thank for that one!
Now comes in Classic, Touring and Sport variations, which includes different deck layouts, tube design and material, etc. As far as I'm aware the hull is exactly the same across the three models.
I used to have a Pro 7 Man which was renamed the Pro Classic 420 (version below 500). It's a shallow v hull, so great in decent weather, but once the wind gets up it will 'slap' in the rough stuff. Something to be aware of - as your passengers won't appreciate the ride handling if the weather changes. I know myself that making headway against wind and tide can be uncomfortable and wet!
Not sure which engine you've gone for? The 500 used to be sold with a 4-stroke 60hp (rated for 70hp max) which seemed to offer best weight/power configuration. Move fuel tanks if possible to under console to spread weight distribution.
Main thing is to get out and enjoy it.