Type 55 was a great film (in my opinion). I too have some in the freezer. But it is not hard to develop 4x5. As a matter of fact I find it much easier than 120. The method that I use is the alternate dip and dunk using the HP combi system as described here http://www.largeformatphotography.in...ve-developing/. You will need to find these used, but they are around. However, 3 pyrex meatloaf pans will work just fine. If you are worried about having enough to process or scratching your neg, you can always do one at a time using the brush method.