Praise be to Allah, the Lord of the Worlds; and may His blessings and peace be upon our Prophet Muhammad and upon all his Family and Companions.
We ask Allah, The Almighty, Lord of The Great Throne, to improve your matters, ease your problems and give you what is beneficial.
It is Sunnah to make Istikharah and seek advice of eligible people. There is a proverb that the one who makes Istikharah does not miss the mark and the one who takes advice does not regret later on.
You made Istikharah; thereafter you had a dream that encouraged you on doing the task. Now, you have to take the advice of religious and reliable persons who know your matters and can give proper advice.However, our advice is to marry the girl if she is religious and of noble character. Don’t bother about her beauty since the original beauty is the beauty of character, not of body. Many good-looking women make the lives of their husbands miserable while many less beautiful women provide a happy and successful life for their husbands.
However, do not forget that mixing with the opposite sex in the work place or anywhere else is very dangerous.
For more details, please read the Fatwa: 82395 and 83953.
Allah knows best.