7" vinyl support

I have a 4000+ collection of 7" vinyl single, that I like to import in OCD. I came with 4 questions:
1.I tried the Add Manually function, but I noticed that the Title fields is always need to be filled in. A 7' single doens't has a title like an album on LP or CD.
How to handle this?
2.On the Tracks tab I always have standard 10 empty tracks, again 7" single only needs two, so I need to delete 8.
Is there a better way?
3.Any change to add 7" single cover art automatically?
4.On the General tab: what is the Single checkbox for? I already have Format: 7" vinyl.