What history do you intend to specialize in? Whatever history you study, the ability to read multiple languages will certainly be required. If you want to study say Japanese history, you're best off studying a Japanese language degree, then pursuing history at a post-graduate level. If you intend to study English or American history, you can pursue a history degree and acquire reading languages at a post-graduate level. You'll traditionally do an undergraduate, masters then doctorate, then seek work in academia, but, whilst its wise to at least examine post-graduate opportunities now, you never know precisely where you're going to be able to go and what you'll be able to study (mainly due to funding), so I'd suggest working towards your bachelors first, learn how to study history, look into undergraduate research opportunities (conferences and journals) and build up a platform for post-graduate study in the future.
Becoming a historian, or indeed an academic in any field, is not easy. Competition is fierce and job opportunities are slim, so there's a lot of negativity surrounding prospective academics. You have to be very committed and very passionate, or otherwise very mad to seriously pursue this career path. Most of us on this track generally fall more towards the 'mad' end of the spectrum