It's your choice, but I think Spanish could of been the way to go.
If you plan on living in the US, then it's going to be highly important. Their's reports (learned in school), that by the year 2010 and beyond and the latest 2020 or even earlier, Hispanics will just about be everywhere in every corner. They are also having heavy influence everywhere as we speak.
And also, farming and construction isn't the ONLY business that needs the Spanish language (someone must be misinformed). Spanish speakers are needed in about everywhere now-a-days ranging from Retailing, to Education, and the money-makers business/marketing. I'm taking Marketing (pay is great) in college and I'm Hispanic, and I see PLENTY of jobs that are looking for bilingual speakers or people who somewhat knows how to speak it...there is a high demand for it.