At the end of the day I simply don't believe in the concept of light IFR - for me either it's IFR or it isn't and if I file I'm prepared to execute all of the options every time. IOW there are no half measures.
It's 100% true that you and your equipment should be ready for everything that IMC can entail, including an approach to minimums. That is why even though I am rated I don't fly IFR right now as I'm not current or comfortable.
However, this question has come up before and it seems like people forget that the original question was regarding equipment - and the truth is that what your PLANNED mission is will influence those choices. If you plan to commute in your plane and need to be ready to fly in nasty weather on a regular basis, my contention is that your plane should have a lot more in the way of capability than if your mission profile only includes much more conservative go/no-go planning, with an occasional hop through a narrow overcast at 6000'. That's not to say that you shouldn't equip that way if you want to and can afford it of course, just not that it would be essential.
Again, this is not to say that you should not be 100% comfortable and current enough to fly to minimums with your equipment, only that it would seem silly to equip your plane the same way as you might should your mission entail worse conditions.
Essentially, you end up with the cost vs safety curve, that we all have to find our own place on. Otherwise we are saying that the only responsible way to tackle any IMC is with $100k worth of avionics and gadgets.
In the end, each person needs to understand the rules, but also make the same cost/benefit analysis that we do at so many other points in our builds. Do you consider 2 radios essential to IFR? How about dual NAV sources? Synthetic vision? Autopilot? Electric trim? The list goes on and on, and only the builder/pilot can really make those decisions for himself. There are thousands of people out there flying IMC in 50 year old Cessnas with much less advanced, reliable technology than we have. In the end I think the OP would be quite capable with a GNS430W in addition to his Dynon setup.
Chris