Hi Ross,
You will be fine at the Hot Marques events mate as they are well marshalled and they no longer allow race cars on.
Most of the weekly private events are pretty cool as well, in particular Track Scotand and SIDC events.
Drop me a pm when you decide which HM you will be attending.
There are usually a few M3s and M5s attend the HM events so you will not be alone.
Alex.