A friend of my who once had the biggest pro lab in this area (now retired) swore by the Apo Nikkors for
mural sized work. I routinely use the 305 and 360 for 8x10 film, though I never print quite as big as you
are planning. These are wonderful lenses for both b&w and color work. If I need more speed I use the ordinary 360 EL Nikkor (a much bigger lens, needing a special mount).