I agree with Westward in that the Suzuki 60 should plane the boat well at low elevation. Our twin Honda 40's put out less that 60 hp on high altitude Yellowstone Lake & with the lower pitched props & fairly heavy load can max out at about 18 mph running 5300 rpm & comfortably cruise at 13 to 15 mph. The Honda 40 needs a WOT rpm between 5000 & 6000 rpm so as not to lug the motor.
If the single axle trailer is near the specs of our original single axle EZ loader it should be ok. We towed our CD22 over 40000 miles including several many thousand mile trips to Alaska & Canada with the only problem being a broken roller arm on the last trip with it north. Of course the dual axle heavier duty trailer we have now is preferred by us, especially with the long more remote road trips we do, but for moderate distances & use it should get you by.
With the above in mind if you think more power & a dual axle trailer important then perhaps the advise of several here should be heeded with paying more for a better set up less costly & a better deal in the long run. Through the years, I have had to work on our Hunkydory much more than I care to, being as I'm one who's joy of boating rest solely in its use, so for me this deal would be easily passed up in favor of one that was in good condition & set up basically for my intended use. As several here have well expressed, the setting up can become very expensive with extensive frustrating time spent on the boat not near meeting the usage dreamed of before purchase.
Jay