What *do* you have to work with? There is nearly always more than one way to get something done, but you have to tell us the equipment and skills you *do* have, not just what you do not have, before we can effectively tell you how to take what you already have to hopefully get the job done (though in the case of jointing and planing, there is always the traditional route if one is up to a good workout). For example, do you have an 8" Jointer, or better, and do you own a thickness planer that can actually plane the full width of the board (many benchtop planers are limited to 10-12.5", though some can do up to 13", but no more than that...and many stationary planers can handle 15-20")?
If you do not own a jointer that is something better than half the board's thickness (such as an 8+") and/or a thickness planer that can handle the full width of the board (and ideally a bit more) then you have basically five alternatives, the traditional route with hand planes, borrowing time in another member's shop (which is something of a tradition around these parts and the simplest route), you can surface with a router and suitable jointing and thicknessing jig/sled (very, very, slow), or use a planer sled to joint on your thickness planer, if it can handle the full width of your board (and ideally a bit more) -- or the more painful, but still practical, alternative of ripping the board down to a more manageable width (such as 6") on the tablesaw and then piecing back together afterwards if you really needed the full width (glue can sometimes let you work a miracle, and, yet, the glue line is stronger than the wood it bonds).
But the point is that there are nearly always alternatives, you just need to let us know what you do have to work with and what you are willing to accept as a workaround -- some require a lot of skill and/or time (like hand planing and jointing or using a router jig), others, like borrowing time in another's shop, are quick and dirty for a one time job. Suggestions will then follow close behind, as may possible offers for shop time (that is what friends are for after all, and hobbies are a great place to discover new friends) should you elect the easiest route.
Good luck!