I would first try to just enhance the video with Iris Interlaced - I had good results with that approach with quite some older interlaced videos.
Iris does a decent job at deinterlacing content and a sometimes terrific job at cleaning up the video from banding, chroma noise and the like.
Maybe you’re content with what Iris does and so don’t need additional Apps.
Personally I like the V1 results more than V2 because it’s more natural - even though V2 has more details, they are quite often “fake”. Be sure to set the Antialias/Deblur value to a high positive value (>50) and also use a high vlaue for "recover original details (80-85 here).
Se e.g. here for an example of Iris V1 cleaning up an old VHS source and gaining some details while still being very true to the original:
