That is definitely something we could consider, gonna need Hoellsen's call on that though...
Since it is only a test race, multiple entries per team shouldn't be a problem I imagine. Just the tracker (if we use it) will need to be updated at the last minute before the race with all these dropped & added teams/drivers. Shouldn't be a problem I bet.
A shame some people cannot make it though, would like to have a somewhat 'full' grid during most of the race, especially for the first hour or two.