Re: learning Kit for kid
As with anyone starting out on a new instrument...
For the benefit of your budget, have them take some lessons and find out if that's what they want to do or like to do.
To make an investment like that and when the newness wears off have them sit unused can't be that much of a good thing.
However, to answer your question, electric kits give the sensation of more than one kit since most controllers give at least 16 different kit selections. They don't trully represent how an acoustic kit would feel being played, however. Beneficially, the electrics or more neighbor friendly than new user friendly.
I would look for a decent condition used kit and if the noise is unbearable, buy some drum mutes for about $50 USD.
Good luck with whatever you decide to do.