First, those rigid frame quick hitches fit one size only unless they are specially made (expensive) with sliding lower attachment points. If you have homemade or attachments with non-standard dimensions, modifications to the attachments will be necessary.
Second, the top link attachment will sometimes work without getting off the tractor. Most of the time it won't but it depends on the attachment. Modifications can or have to be made.
Third, the top link will need to be 4". or so, longer so the geometry with the QH is the same. Your present one may be OK but measure to be sure.
Fourth, if you have PTO equipment, the PTO shaft to the implement may be too short with a QH. There are extenders that can correct this. Ag Supply sells them for around $20.
Fifth, the QH will extend the fulcrum point and cause the attachment to seem to be heavier. It is not a big problem on your size tractor.
My solution to these problems was a Pat's Quick Connect. I tried the original but was unsatisfied with the longer lift arms and the issues listed above.
Finally, I bought a Cat 2 weld-on Pat's, cut off the balls on the slide-out lift arms and welded the Pat's on. That cured all the problems and, in addition, the slide-out feature was saved.
The lift pins on Cat 1 implements can be bushed to fit the Cat 2 Pat's. They are a couple of bucks each.