Despite what some tire shops like Discount Tire will tell you, quality adapters properly installed will not be an issue. You will want to get ones that are hub-centric so you know you get the tire installed concentric to the hub. And do not buy the cheapest ones you can find on fleabay - look for a supplier with really high marks. You will want to use blue or red loctite when you install the adapters to ensure that those nuts never come loose.
The Edge wheels will have somewhere around +38mm offset while the Ranger has somewhere around -6mm offset, so you will need adapters of roughly 1.5"-2.0" thickness to get the tires in the proper location. I can tell you from experience, it is better to have the adapter a bit thin rather than too thick - if they are too thick they move the tire out far enough it can rub in turns. FYI, the factory wheels will have the offset either cast or stamped into one of the spokes, so you can determine exactly what you need to make this work.