Change the 210 lens and take the Wista. A exercise from Tillman Crane is the 5 minute drill. Have all your stuff packed up and pick a photo op. Anything on your living room wall or backyard is just fine. Pull everthing out, set up the tripod, mount camera and lens, focus, take meter reading insert (empty) film holder and shoot. Pack it all up in under 5 minutes. Do this each night a few times before your trip and you will be awful fast next month. I did this a while before a big trip to the Smokies. At a barn I was photographing a digital guy walked to me and says; "I can't believe how fast you took that picture" He made my day.