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I'm making several changes to the bike and understand that rejetting may be needed as well. I ride between 4000 - 8000 feet. I purchased the JD Jetting kit for the 450x and they give me a recommended jet setting for the following elevations: 1) 3000 - 6000. 2) 6000 - 9000. I'm not sure which jetting to use because I cross over both elevation ranges. My house is at about 4500' and I usually ride at that elevation or higher, upto 8000' My stock jetting seems fine across both elevation ranges, but I'm putiing on the Bomp head pipe and removing my smog. I'm new to jetting and don't want to hassle with it a lot. any recommendations on best setup?

I have the JD kit and use the red needle, 4th clip, 170 main and currently have the 45 main. I ride from 600 feet to above 9000 and it works well for me.
Joe