lens recommendations

I am strongly considering buying an Olympus OM-D-E-M5 camera but I am a little confused about the best lenses to get for this camera.  I eventually would like at least a zoom and wide angle.  I prefer quality lenses and cost is not particularly a concern although, I of course, don't want to waste money.  My main interests are landscape and HDR photography.  Any recommendations or referrals to good web/discussion sites regarding these issues?  thank you