not to impose, but could another reason for not blanketing the whole engine with degrease is that you could harm the rubber coatings on some of the electrical/vacuum lines?
I'm of the view that it's better to be safe...do it by hand
Take a morning, or two..or so, and just clean it with a hand rag, air compressor, and metal/paint polish.
I run mine as a daily, and once the initial pain is done for the clean, it only takes 45 minutes each weekend to keep it detailed..................why are you folks looking at me like that