You could improve your calculator by including a forklift type which Raymond obviously does not have in its product line up. This is the articulated forklift which just surpasses the the aisle width minima needed by the narrowest ailse truck that you quote, i.e. the swinglift. You quote 66 inches for a swinglift aisle width but the Bendi can work in aisles down to 63 inches and is every bit a match for lift heights, i.e. up to 13 mt. More significantly, perhaps, the Bendi needs far less maneouvring space at aisle ends when moving between aisles than the swinglift needs. The Bendi's many other advantages over dedicated VNA trucks like the swinglift are well known.
Best regards,