Best degreaser option

Ventilation isn't an issue, I have a fan on in my hangar and the doors are normally open when I am working. I will look to make sure I have good drains that are not already plugged and check a few things before I start cleaning with whatever option. I need to pick up a good shop vac as well.

Okay, I have read dozens of belly degreaser posts on different forums, but none of them are specific to what I need. I am tearing my Ercoupe apart for its first annual under my ownership, so basically I am fixing things like; rebuilding the seat frame that has been pieced together over the last 70 or so years. Changing a few things and removing my venturi and associated instruments.

Well to the fun, I have a lot of grime inside my plane that needs to find a burn barrel or land fill or environmental waste facility your choice of words may be used. And I want to clean the inside belly of my plane. Any suggestions on what to use to make this job a) easy and b) simple. Okay other than getting some young kid that can bend, squeeze, and contortionist their bodys while cleaning.

Picture of interior