It is possible but will be a lot of work 209k polys is a lot for GG to cope with especially when you will want to fill your level with other things it will need to be edited and optimised, will have to be an indoor level with water and terrain switched off.
a lot of the detail could be taken out and added back in the normal map
I have a lot going on at the moment but will give it ago just may take me a bit of time please send the model to me via PM
Welcome to the real world!
Main PC - Windows 10 Pro x64 - Core i7-7700K @4.2GHz - 32GB DDR4 RAM - GeForce GTX 1060-6G 6GB - 1TB NVe SSD
Test PC - Windows 10 Pro x64 - G4400 @3.3GHz - 16GB DDR3 RAM - GeForce GTX 950 2GB - 500GB SSD
Laptop - Helios 300 Predator - i7 7700HQ - 32GB - Nvidia GTX1060 6GB - 525GB M2 - 500 SSD - 17.3" IPS LED Panel - Windows 10 Pro x64
Various Tutorials by me