The XG7317 is loads better than the 60-80 micron unit Mopar uses. Using the XG is the same thing as adding an external oil filter to the cooler line, except it's in the pan, and the XG is a lot better than even most of the oil filters used in those kits.
Long story short is, most definitely enough. The XG has pretty good efficiency even at 5 microns.
I would highly recommend you get a metal filter boss from one of the many suppliers that make one. I don't trust the plastic ones that come with those filters.
Also, don't forget to toss some good high temp magnets in the pan. 68RFE solenoids hate ferrous metal contamination.
And don't forget to tape off the open end of the filter and wire wheel off the filter's paint. I don't even know if it is an issue, but it's super easy to knock off all the paint with a wire wheel. Just takes a few seconds. Then wipe the can down with a towel and brake cleaner, so you're not leaving behind metal and paint dust.
What is a metal filter boss?
Could you post a link to the magnets you used?
Did you ever take pictures of your remote filter setup?