So, I'm a 7-merc wonder who's set his sights on 12-13 HoM, and all of my goals I've set reasonably fall within the limits of "henchability", save one.
I need a 5th companion/hero statue, and I'm having a hard time locking something onto the eventuality treadmill of my playing habits. I'm not interested in cultivating an uber elite GW player skillset for the lifespan remaining before GW2, (the whole reason I picked the game back up after a many year hiatus), I've defeated all core stories of all three campaigns (normal mode, obviously) and EotN, so I'm not here to discuss builds, as I can and have brute forced a good amount of reasonably accessible content with my meager tactical skills and super powerful PvX cheat-sheeted mercenaries (just being honest here, please don't hate, I'm loving GW for story and GW2 linkage

Here's what I have:
-Imperial Phoenix
-Black Moa
-MOX
-Animal Companion
The "shortest route" options I can see are the black widow via underworld or an EoTN hero armour upgrade, but all sources of which appear generally unhenchable. I haven't tried these avenues yet, (and I'm not begging for walkthroughs or handouts), I'm gathering intel before I strike out to try, but I'd rather get recommendations from people that know this game better than I do, so I don't waste my time or resources.
Like I said, all my other goals involve eventual, non-daily grinds. I know the widow can be purchased for zaishen, but I consider many hours in one day a couple times a week far more reasonable than two hours a day over a month. I can do long grinds, but it needs to be on my terms, timewise and frequency wise.
I should also mention that I'm a 100% PVE player, and thus very not interested in PVP options. I'd also rather avoid "purposely inflated difficulty" things like challenge missions, as I have heard these border on unhenchable. I'm not here to "be challenged" (on the "go looking for harder stuff to prove my amazingness" level), but to see story, spend time, and kill things at my own pace. Half of min-max (minimum time/effort, maximum gain) is "min", after all

If anyone can provide insight, suggestions, or correct my perceptions (like, if I'm totally over-estimating the brutality of UW or something), I'd appreciate input, you guys put me on this path to moderate (and good enough for me) success, and I thank you for the help, now I just have my mild OCD enflaming those 4 statues on the left of my HoM in my mind.
Thank you for reading, and thank you in advance for any and all constructive replies.
