New Cherry Tree

Over the weekend we bought a grafted cherry tree with Bing, Montmorency, Rainier varieties during our favorite nursery's opening weekend.  Since the weather out here is still a little iffy (can range from 30-60 degrees F from morning til night), we're still waiting to plant it for a few weeks.  Should take about three years for it to bear fruit and I can't wait to be able to pick multiple varieties of cherries all from our own backyard, although I wonder if multiple graft fruit trees fare any better, worse, or the same as regular single grafted trees...I guess only time will tell.  Also, I figure that once the tree starts baring fruit, depending on how well each graft fares, we might buy an additional tree of just that variety.