Hey Star Wars Guys

I hope it's ok when I make a small thread hijack. I have a technical question, and I hope you can help me

I'm building a model, and it's somewhat similar to a SD (in that way, that is has the embedded space on the sideline which should be filled with lots of greebles). I estimate, that the LOD 0 Greeblestuff, that I can mostly skip in Lod1 and replace with a texture, will impact with ca. 50.000 polygons, the overall Model (including greebles) will have around 70 K polies in LOD0. BTw, all the greeble stuff is just a duplicate from one greeble element that impact with ca. 5K polygons, but I don't know if that matters for the engine or if it still has to calculate the entire 50K.
Have you some ingame experience with a SD variant or something similar high polied about game performance ? Technically, when I'm flying close to the ship, I can only see a small part of the greebles, but I think the engine will have to handle all once LOD 0 is loaded. So what Systemspecs is needed for a good performance.
I also know of Bobs Detailbox Code from the past, but I'm unsure if this is still working or have been improved. Can you give me some insider knowledge please, so that I know I can continue on the model ? I don't want to make the sidestuff with a texture. The ship is too big (ca. 2km) , and ingame I will need the detail, and not only flat textures.
Thanks in advance

Starman