Is it better to use backup/restoration service which is included in the package plan or backup as a separate service?
Both variants are offered by hostingsource.com.

It is simpler to use in all in one package.
it is better.
but if you have more budget and lot of important document ,
dedicated backup services will be wise option

All in one is better. I agree. But what the compny have you selected? Try looking through the offers of such hosts as santrex.net or webintellects.com - much cheaper with same or better experience and specifications!

I think that you will not regret having looked at exmasters.com. You will be fully satisfied using their hosting services. Moreover, if you are hesitating on the hosting solution you require, you can always contact their support team and they will assist you in making the right choice. Pretty much all the companies nowadays come with a money back guarantee. So you are free to explore different companies and pick the best.

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It depends, if you are a clients of hostingsource.com, you don't need to use backup as a separate service, it's included in their plans.
Overall this company experienced and stable and they have high uptime.