I'm not a native speaker but I've noticed few mistakes in your writing. Firstly " for " should change to "to" and the word after should become discuss. Secondly, the last sentance should convert to present perfect, so it's " I've enclosed"

We only need to change two prepositions,, adjust a verb, and we should remove the comma after "inform you" since you are continuing the same sentence. Replace "get to the store for discussing" with "get to the store to discuss" Replace "my job offer to the letter" with "my job offer to this letter."