Hi, Aeric--
A few observations:
1) The Planets in the Fourth House are in Capricorn, not Virgo. If Venus was closer to the other two, I'd label that cluster a stellium, but at 12 degrees of distance, that feels like too much separation to qualify (as I personally view these things). So there's a Mercury/Pluto conjunction in Capricorn in the Fourth House, but if you're asking me, no stellium. A stellium is one of many, many concepts in Astrology whose definition will vary from one astrologer to the next, but it seems safe to at least say that when three or more Planets lie within close enough proximity to each other (again, "close enough proximity" is somewhat subjective), and are in the same Sign *and* the same House, then it probably won't raise too many objections if you call the cluster a stellium. I don't think anyone ever really says "triple conjunction." I'd still view Capricorn and the Fourth House as very important focal points of energy for this person, though.
2) You've included some features that many astrologers don't consider all that important (although as with everything else, you can always find some who will swear that they're life-or-death essential, too). Things like the Part of Fortune, Lilith, and the Vertex are often disregarded entirely, and more traditional astrologers will even dismiss the Outer Planets (Uranus, Neptune, Pluto, Chiron). What feels important to you, based on your own experience...?
3) The North Node and Jupiter are both less than a degree from the Ascendant, and I'd refer to them as "Rising" (as in, "Jupiter Rising"). I've personally found it to be true that a Rising Planet such as this seems to hold elevated importance for a person, and they often seem to embody the essence of that Planet -- this is just my own experience, though, not some rule I'm quoting! I'd tend to think that Virgo, Jupiter, and the First House are all important symbols to study for this person, and if you like Nodal analysis, it would seem that having one's Nodal axis aligning so closely with the Ascendant/Descendant axis also merits some study.
4) When a chart has three or more consecutive Signs empty of Planets -- such as here, with Taurus, Gemini, and Cancer -- some astrologers will say that the chart is arrayed in a Locomotive configuration. The Planet that represents the border on the counter-clockwise side of that empty space is known as the Cutting Planet, and people who embrace this kind of analysis will say that the Cutting Planet carries the same kind of augmented importance for a person that I see in a Rising Planet. I don't really have much personal experience analyzing Locomotive charts and Cutting Planets, so I'm just reporting the news here, and not saying yea or nay...
5) I don't know that I see any other "significant arrangements" as you phrase it. I'd suggest starting by examining the "Big Three" of Sun, Moon, and Ascendant, and then move on to the Aspects and the connections by Planetary rulership that feel strongest to you. Some of the analysis will hinge greatly on how inclusive you want to be in terms of which Planets you want to consider.
I hope that was helpful! Hopefully, some of the veteran posters here will weigh in...