Yes the notary officials available at courts provide the facility of the translation and certify them. It is easily get translated in to English language.
As per my knowledge if it is not recommended the notarized or certified translation than no need to do that and if it is asked than you have too. I will follow the instructions carefully.
Yes it is perfectly allright. It is already issued by government with their authorized stamp and signatures, so they will work without notary also. Dont worry.