The black river is pretty cool because you can drag for a while in the straight by the overpass then when you get tired of that hop on the recreation quad/sled and go for a long ride down the river for a couple hrs.
I have a set of tires and wheels already setup that i will sell you for $240. They have 96 1" ice pix per tire....razor sharp, only been ran 2 times. PM me if your interested.
Most ppl. say that running just all chisels pull out of the tire. I have heard that runnig a combo of chisels and picks works awesome.... That is what i will be running on my 10mm cheetah this winter.
I would say it will be very close....he may get you...it's hard to say, You have a huge advantage on the holeshot unless his tri-z has an extended swingarm.
Just boring your motor over on stock sleeves won't give you much of a performance gain at all. If you want a big gain in horsepower go with a bigger sleeve, or longer stroke. There are many builders you can contact to get this done for you.