I do a lot of interior work in homes and small commercial spaces (bars, nightclubs, restaurants, some offices) and I shoot 4x5 and 6x17 (6x17 with a V-Pan Mk. III). A better combination for 4x5 is the 90mm and a 65mm. My lenses are both Rodenstock Grandagons.

I use the 90mm ?/4.5 Grandagon and use a Heliopan 0.45ND center weighted filter when using it with the V-Pan to even out the falloff from corner to center. The 65mm doesn't cover 6x17 but my tests with a 75mm displayed way too much stretching (perspective) distortion in the corners for me to feel comfortable with it for architectural work.

The 110mm is a great lens but I think you will shortly be also wanting something that covers a wider subject angle in the 4x5 format.

The 65mm doesn't cover 6x17cm but that is no big loss.