Sounds like a plan.,Byron is a good friend of mine,..I hunted and shot with him quite a bit back in the day,,shot my first longbow kill,,on hunt with him,,,with bow he made me,,.his suggestions about how to shoot are with me today,.I never saw him do much bare shafting,,,he may have,,.he shot aluminum,,.he was fanatical about tuning bow and tiller..,..there is lots of info,.,and misinformation,..when the arrow hits the bulls eye,,,.its a mute point,.,
I think the knowledge gained from bare shafting is great,..but to keep things simple,,,,once your alignment is better,,,,arrow spine and tuning will be much easier,..and u will be closer to shooting like Byron
also I want to add,, I am just guessing but I think you are pulling about 50 ish,, if the bow was made 60# at 28,,, you would be drawing about 25 or 26,, just guessing but putting a piece of tape at 25 inches as suggested and see where you are at when you shoot would take some of the guess work out ,,, or validate what the arrows are telling you,,,and I still think the 6 inch brace would be ok,, since you may not be drawing the bow to a full 28,, it would help make the bow a bit more forgiving with out putting undue strain,,