1. There is no naturalisation without first being granted ILR (settlement).
2. An application for settlement under the 10 year
long residence category cannot include dependents.
3.
KOL required for ILR.
4. Yes.
5a. You - After a year of being granted settlement.
5b. Spouse - Spouse's naturalisation depends on how and when he/she becomes eligible for settlement. Apply for spouse visa (
FLR(M)) once you are granted settlement (provide the current leave isn't going to expire before then).
5c. Child - Is the child born in the UK? If so, then after you are granted ILR you may apply for registration of your child as British citizen using
MN1 under
Section 1(3).
regards