Travel to Norway to visit ancestors' farms

As I mentioned in an earlier post, my paternal grandparents' ancestors came from the Voss area (Fadnes farm) and Aurland (Berekvam farm). I and my husband would like to visit those areas. We are from Milwaukee, WI, USA. Are there any English speaking tour groups that would guide us from Bergen to Aurland to Oslo. I am 69 and my husband is 78, so we are not comfortable planning this trip on our own. We, of course, would like to experience the Flåm railroad and a day trip on the Sognefjord. Are there any recommendations anyone can make. Thank you.