That's very nice bike. I don't think there are many DIY hub motor kits that do it any justice. I like hub motor kits because they are inexpensive, but the installation does clutter the line of a bike, with extra hardware like a rectangular controller and its tangle of connectors. Installed a few of these, and it takes time to sort out the install.
You can get into those integrated motor/battery/controller all in one unit, but they are insanely expensive, heavy, ugly, and too dependent on bluetooth.
I've been running a mid drive BBS02 on an aluminum frame Diamondback hybrid since 2016. It doesn't use the threads in the frame. It just fits against the two sides of the BB. If someone is flaring the aluminum, maybe they're using a custom wrench with a 3 foot breaker bar. I enjoy the bike. It's very quiet. I like to use my gears and pedal, so the BBS02 has more than enough power for me.
Only complaint might be that I hear that the throttle/pedal assist is not as good as it used to be. On mine, I can apply throttle anytime and it overrides pedal assist smoothly. I believe the new ones, you have to stop pedalling for a bit. Then you can use the throttle. Not good for a trail rider.
Another middrive is the Tongsheng TSDZ2. I'd like to get one, just to have a torque sensing pedal system, but that's not a good reason. Maybe if I had a decent bike like the OP.
A kit bike has the option to run any battery, and over time, I accumulated small ones and big ones, using what I need. I don't have to ride fast or far, so a small one works. While I have a 14AH rack battery on my BBS02 kit, it does come off.
Here, I carried 30AH of spare batteries for my bike and my wife's bikes in the saddlebags. I didn't know how the Colorado grades would affect our range. Turned out they were former rail trails and very mild, although they climbed for miles. Didn't need the spares. My wife's bike, not shown, used a small hub motor. More than enough for this ride.
