There are several stories of friendship that have been broken apart due to loans that haven’t been repaid. You’re not a bad friend if you refuse to loan him the money. Irrespective of the fact that the reasons for the loan is not life threatening, it’s your money and up to you to decide whether to loan him the money or not.
You’ve got a goal. Anything that would want to hinder your plans from attaining your goal would be frowned upon and would not be welcomed.

It’s your money and no one should pressure you in guise of friendship to part with money you don’t want to. Nevertheless, sacrifices are required in true friendship.