The sentence is correct.
Both "such that" and "so that" are used in English. But here we actually have ".. so proud..." and then later a "that" clause. This type of structure is quite common
I was so happy that I danced on the table.
I was so happy with my exam result that I danced on the table.
The verb "decide" can have its normal present tense. Here it seems to be commentary: a narrator is describing a scene as it happens, this is one of the standard uses of the simple present. Narration or commentary doesn't often happen in conversation, but it is a standard technique in fiction writing and sports reporting.
The goalkeeper kicks the ball. It lands at Messi's feet. He dribbles it forwards and shoots. It's a goal!