Have you considered using a Paterson tank and developing "taco" style?
“Photography is a complex and fluid medium, and its many factors are not applied in simple sequence. Rather, the process may be likened to the art of the juggler in keeping many balls in the air at one time!”
Ansel Adams, from the introduction to The Negative - The New Ansel Adams Photography Series / Book 2
I could work with tray when I am on the west coast, but I do not have facilities to do that unless I go to photoworks [http://www.glenechophotoworks.org/] and use their darkrooms. I tried a number of daylight load tanks and progressed up the cost range finally ending up with a JOBO processor. Hence now I can develop color film.
I was never successful in finding or building a workable development tent. I hope that you find something that works for you.
Warning!! Handling a Hasselblad can be harmful to your financial well being!
Nothing beats a great piece of glass!
I leave the digital work for the urologists and proctologists.
I have and use a Jumbo Harrison film changing tent. It would accommodate a series of tray quite easily but I shudder to think of the mess from splashes and spills.
I have a series of 1 gallon (US) deep tanks with a rack which I can use only at night if I turn the house into a darkroom. It does work. But I favour using Paterson tanks for 120 and Jobo 2509N reels in 2500 tanks for 4x5.
- "Photography was not a bastard left by science on the doorstep of art, but a legitimate child of the Western pictorial tradition."