The Entire Purpose of a Huge Pipe Organ, is to fill a HUGE Auditorium or Church, with sufficient sound to provide music to fill A "HUGE ROOM" ! ! !
Atlantic City's Midmer Losh Pipe Organ, Was Designed, to fill what I believe is the Worlds Largest Auditorium ! !
In order to fill our Living room with beautiful music, We do not require a HUGE Sampled Organ. What it really does need is a Very Realistic moderate size "Pipe Organ Sample set, a Console, The Hauptwerk Program, Quality Speakers, Amplifiers, and the required Interfaces. That alone is a difficult enough project. But will provide Us with amazing Music at Home !
A Hammond organ can provide lots of music, However nowhere near the sounds of a Pipe Organ, or A well built Sampled Pipe Organ ! ! !
(BTW, There are Midi encoders, and Sample sets, that can be used to build a sampled Hammond, If one prefers that sort of Sound ?)
My choice if I wanted that sound would be to Buy a lightly used Hammond Organ, and a 122 Leslie ! that will cost Lots less than any Sampled Organ.