Hi Darrell
My obs is 3x2.4m with the mount slightly off centre so I have one end for computer desk etc with a curtain hung between the two sections for a bit of light control from monitor. I think it would depend a little on what mount you're going to use i.e. fork or equatorial ... an equatorial requires a bit more manouvering space ... also what size is your largest scope ... my 10inch Newt is 1.2m long and fits well inside my obs.
I don't keep anything in the obs other than my mount and old desktop computer ... my scopes, camera and other bits and pieces live in the house ... better temp control and more secure.
Congratulations on your new dark sky site ... you'll love it mate ! Look forward to photos.
