YOU SAID:

I think I'm going to go take a walk to the beach.

INTO JAPANESE

私はビーチに散歩に行くつもりだと思います。

BACK INTO ENGLISH

I think I'm going to go to the beach for a walk.

INTO JAPANESE

私は散歩のためにビーチに行こうと思います。

BACK INTO ENGLISH

I think I go to the beach for a walk.

INTO JAPANESE

私は散歩のためにビーチに行くと思います。

BACK INTO ENGLISH

I think I go for walks on the beach.

INTO JAPANESE

私はビーチに散歩に出かけると思います。

BACK INTO ENGLISH

I think I will go for a walk on the beach.

INTO JAPANESE

私はビーチに散歩に出かけてみようと思います。

BACK INTO ENGLISH

I think I will go for a walk on the beach.