With one exception I have found CG to be flyable in ARF and kits.
Exact CG is a pilots choice. I now perfer a neutral CG, vice slightly nose heavy.
I check CG by flying a 45 deg up line roll inverted and let go of the sticks. If she climbs she's tail heavy, if she dives then she's nose heavy.
a very nose heavy airplane will not want to slow down on approach and you're going to buy lots of props because it won't flair.
A tail heavy airplane if flyable will be sensitive on the controls.