Sentence structure: Much to my surprise, he is planning to go to Japan.

[Bulone]

Pardon me for all those underscores in the place of spaces.

I haven't had time to figure out what causes this to happen.

Much to my surprise, he is planning to go to japan.

It wasn’t limited to stories that were in the book but any stories that are of interests to him.

he still managed to maintain his studies.

He possesses all the qualities of what needs to be a good chef.

Are above sentence constructions correct?

[Kitosdad]

Much to my surprise, he is planning to go to (Japan.)

It wasn’t limited to stories that were in the book but any stories that were of (interest) to him.

he still managed to maintain his studies.

He possesses all of the qualities needed/ necessary/required to become a good chef.
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If you need me, I'm here.

[Bulone]

Thanks kitosdad