Well, I've seen other map authors with ~1700 and ~45000 lines!
I hope you won't be disappointed.
45k is probably "Path of the Hero," an RPG with a lot of mechanics. My "Shades of Darkness" from this year has over 2k.
It's important to understand that for a first map, 1000+ lines is really impressive and deserves respect. And in general, it's not just scripts on every corner of the map! So I would be proud of that. If there are also good quality videos and mod elements (15 MB archive after all!), then it's really great.