The answer depends on how much you want to spend and how much you want to enjoy the trap line. I'm assuming that neither you nor your friend are planning to pay for gear and gas on an 80 mile line with today's fur prices.
But if you are trying to make money trapping, I recommend a time machine. A farm boy muskrat line in Pennsylvania covered on foot and by bicycle, circa 1957, made some real money. Gas was 25 cents a gallon and a good muskrat sold to Sears for $2.50. At $5/ gallon for gas, those would be $50 muskrats!
If you want to have fun and still use snogos, I recommend five or six 70 pound dogs after you have put in a nice trail with the snogo. If you want still more fun, I recommend my current lines: some 2 or 3 mile snowshoe loops for marten in winter and still shorter bunny snare lines in the sunshine of late winter.
But to stay on topic a little, I trapped by snogo for 20 some years. I have used an Elan, Yamaha Bravo short track, Tundra and Tundra II, older Yamaha Viking, Skandic WT, and Skandic SWT. (Started out with a Scorpion Lil Whip, Polaris Colt 340). All of mine have been 2 cycle.
The huge step for me was going to the big machines. The first of those was the old springer Viking and it made life so much easier. Interestingly enough, friends who use them don't like the new Yamaha Viking Pro and consider it to be poorly balanced (top heavy), tippy, and without enough floatation for its weight. The Skandic WT is good, but by far the best machine that I ever used was the Skandic SWT. Unless you hit overflow, it is pretty hard to get one stuck and they are very easy to ride.
The most important thing for trapping with the SWT is the ease of going slow with deep snow and tight turns in the woods. That just isn't possible without a lot of floatation. The 24" track is not only the widest available but the width provides stability that even a 20" track doesn't. My wife is a very small person and for her the easiest machine to ride was the SWT. Her Elan and each of the others was much more work to ride and none of the 15" tracks that I had did deep snow without being on step, i.e., not in the woods. The paddle tracks don't leave a trail, they just leave a trench.
Before the big machines, we spent a lot of time breaking trail with the combo of a Tundra and an Elan. Much shoveling and lifting. It was great exercise though.
Whatever you use, have fun!