Adequate jet variety?

My "new to me" KDX has a 160 jet in it now, and it's running *way* rich. Rivers of black goo out the pipe, dripping on the swingarm, etc. I'm going to rejet it, but I'd like to pick up an "all you'll need" variety of jets while I'm at it...I'd rather have all the jets I need on hand vs being SOL some Sunday morning.
As I said, it's got a 160 now, and that's rich. The bike is bone stock. I see that a 155 is recommended, so that's the first jet I'll pick up. What other sizes should I get to cover all my bases? 150, 152.5, 155, 157.5, 162.5, 165? Some/all?
According to my handy-dandy GPS, I'm at an elevation of ~1489 ft. Weather.com says the temp here is 48 degrees F, 50% humidity w/ 30.07" of barometric pressure. I don't know what fuel/oil was used in the bike, but I'll be using 93 pump gas and Motul 800 oil.'
Any help would be appreciated. I don't know how much 2-sroke jet sizes change w/ weather. :silly:

I exhanged the 160 main for a 155. I also dropped the needle (clip was in the middle position, now 2nd from the top), and replaced the 9 series plug with an 8 series. I also flushed/changed the coolant and tranny fluid. The bike seems to run a lot better, but I've still got some tinkering to do. It's not sputtering and bogging like it was. :thumb:

This is my first ownership experience with a 2-stroke, so I'm learning as I go. I'm completely open to try to learn the wisdom of the 2-stroke gods. :worship:

Brandon