Good story!
It would be more interesting if the staf set him up with a girl from each house.
Author's response
As you are going to read further (the next X-chapters), there is a reason why he chose Hermione and Ginny. Getting the connection with the two girls, is a very delicate process, and that would only work when the girls are already close to him, at least one of the girls.
In my Yahoo group you can read the first 120,000 words chapters (unedited) if you want to read.
Wim