Looks like a solid kit! (but the website states 2400W peak 1200W continuous, and I would tend to believe it since the video of the guy trying to catch up to the DH racer took way too long in the one clip https://youtu.be/j89T0VSn8Tw?t=236
.... On a tangent kit he would have been trying not to loop the bike... and I've done that too, at speed...)
IF you can demo ride some bikes that would help you tremendously.
personally if my kit delivered "ONLY" 3.5kW I'd be really disappointed, I'm glad I have 6k on tap....
I really don't want to come on as pushy or anything like that. But if you have 6k you don't need to use it all the time, but if you only have 3.5k, you can never have more...
Again, there are TONS of riders on here that have far less than 6k or 3.5k bikes, and they love what they have and have the time of their lives! But I know me, and me always wants more. My first lust was after something like what toolman2 has. Search it, its nuts, really a MC level torque and speed but takes a ton of knowledge and skill to implement which made it out of reach for me. Thankfully there was a guy like Dave that offered what he does and allowed me to just bolt it on and go. I'm actually more than satisfied with the power given that I've discovered how much I love single track on a bike like this!
To each their own!