Hoi Presidenten,
I'll be giving your map a +1, the reasons for this score are the following;
The theme is original, as there are no GTA V maps, the build is good too, it resembles the building nicely. About the parkour, It's varied, although I think it's a bit long for an insane map. Also I got lost sometimes so I would recommend you to add signs so it's not messy.
¡Good Luck! <3