I am building a darkroom and I am doing the framing Monday and need to know if 8x12 will work or do I need 10x12. I will be doing 4x5 negs and want to print at least 16x20 and maybe 30" prints.

Please advise current darkroom owners, as I really need advice here.

I need to make a decision but because I never owned a darkroom before I am not sure as to the size I am going to need. I have worked in many darkrooms but I never really thought about the dimensions.