Where abouts are you? the 2 letter location for the forum doesn't really work well for those outside USA.
What hulls do you have?
If you are still collecting gear for the Mono2 go with 6s not 4s, the lower amp draw makes things run cooler and more reliable, and you may be able to use a cheaper ESC. At this pointonly a few people with old setups are running 4s, as you're starting fresh there is no need to look at 4s unless you have a bunch of suitable 4s gear from another hobby.
What the web people are running is much closer to what people are racing in my area, 3000-3900kv with 3400 being the most usual for Mono1, and 1500-1900kv with 1700 being the most usual for 6s. I have seen a few Mono2s on low kv as the bigger hulls will take a bigger prop, but I've never seen a Mono1 with as little as 2500kv, and I don't think it would work well.
All the Naviga surface drive classes inc Mono1 and Mono2 are of 6 minutes duration with 10 second mill and in lap, so you need a run time of about 6.5 minutes.
I am not sure why the disparity, it may cause offence and I am probably wrong, but with the 4s, low KVs and 5 minute races, all I can think of is that it is an isolated club with no outside competition, and is a dozen or so years behind the times. Are they using stepped hulls? If not that would explain the low KVs, unstepped boats needed a lot more prop to push them.
Paul Upton-Taylor, Greased Weasel Racing.
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