It's a training ground...............
Just use it as such.
I don't know the path you choose but it seems to be a hard one to me.
Kilroys has always seemed to me as one of the worst maps around.
As I have said to you before "IGNORE" that mac map it is not a mac map but a B&W map saved in an old fashioned mac compatible format.
All the files here can be unziped on any mac 7y old or newer with a free DL if it is not built in.