Re: A couple of questions
Depends on how you try to light them. I use a single coil electric burner and they are good to go in about 3 in or so.
The quicklites are ok. You can use them. Just make sure to let the coals get competely ashed over meaning completely gray. Then put them on your hookah bowl. I just recommend naturals cause they are far better for you as coals go. Plus they dont have any taste to them.
(*Disclaimer* These are my opinions and mine alone. It does not reflect the opinions of others and is based on my personal smoking enjoyment and experience)