You asked for opinions and here is mine:
Do NOT convert it. You will make it less valuable as a collector piece
and as a shooter.
Collectors place—and pay—a premium on firearms that are in original, as-issued condition.
From a shooting perspective converting the trigger to the transfer bar system WILL introduce additional points of possible failure and WILL degrade the quality of the trigger pull.
Years ago a buddy and I compared trigger pulls on identical Blackhawks—identical but for that his was a New Model (with the transfer bar) and mine was an unconverted Old Model. One of us would close our eyes, the other would hand over one of the revolvers, and we would dry fire it to see if we could tell the difference.
We both could easily tell the difference, every time, and we both agreed that the Old Model had the lighter, crisper, better trigger.
As previously posted, if carrying 6 beans in the wheel is important to you then do yourself, Old Model lovers, and the Old Model itself a favor and sell it for it's full, unconverted value. Then, take the money, buy one of the tons of New Models available, new or used, and send the leftover cash to those of us who rightfully recommended against the conversion so we can buy beer.