Your post reads as if it's not been ridden pending an internet forum decision on the lack of bar weights.
Handle bar weights are bugger all to do with the size or power of a bike.
They are there to neutralize any effects of vibration,principally blurring of the mirrors, but also sometimes to counter any 'white finger' effects through the grips.
As above,just ride the thing and find out.
By the way,the aftermarket anodised bar ends are just that....end pieces which may looking pretty but do sod all to counter vibration as they're normally just a piece of alloy with no weight to them.
Compare aftermarket ones to genuine and feel the difference.
You can achieve better results by glueing a lump of lead inside the bars,ideally different weights in each side.....transformed my mate's Lambretta chopper!