Thanks. I understand. Maybe 2 degree would be best. I’d do 5-PW to space my gaps evenly. My 2 and 4 irons are HMB with stronger lofts already, so maybe 1or 2 degree strong in 4 iron and no change to the 2 iron. My T20 wedges are 48, 54, and 60. So with my pw being 46, I would start my gapping from there.
As long as you look a the actual distance gaps and not the loft differences, you should be fine a degree or two. Upping the loft on the HMBs is also something to look at. Having a high flying, soft landing 4-iron is underrated IMHO.