if you don't have a high point balancer you can check the CG of your main rotor using two glasses, adding more weight to the blade that's high

increase your rotor speed until helicopter just gets light on the skids to check tracking

don't use heavier than kit blades in blade grips without thrust bearings (bearings in grips will seize)

i prefer to swing my blades, rather than lock them down

the lighter, the longer, the wider the paddle the quicker the cyclic response;  the heavier the paddle the slower the cyclic response

flybar stiffeners in flight only make your helicopter look pretty, however if decide to crash they may prevent your flybar from bending