Attic ventilation: Is it ok to have WAY more intake than exhaust?(ratio= 1224. sq. in: 180 sq. in?) – GreenBuildingAdvisor

Hi there! I know that for attic ventilation, Joe Lstiburek recommends having more intake than exhaust ventilation, but is there such a thing as “too much” intake vs exhaust?  I have a hip roof with only about 10′ of ridge over a 40′ long x 28′ wide attic   (not counting the 1′ overhangs) and am about to replace the roof, and also replace my old plywood soffits with vented vinyl soffits. Using the vented soffits all around all sides of the home, along with a ridge vent would give me an intake of at least 1224 sq. in to an exhaust of only 180 sq. in.  

The total ventilation would exceed the attic floor area divided by 150, so does that mean it should be ok to have “unbalanced” ventilation?

I am in southern Maryland in climate zone 4, btw. I do have lots of insulation (just had more blown in) but there is no vapor barrier under the insulation.

Thanks so much in advance!

(By the way, I LOVE listening to Joe Lstiburek’s videos- I’ve learned so much and he is so funny and a great teacher!  I learned  that I should definitely disconnect my old electric attic vent that I had installed 20+ years ago the last time I reroofed, thinking it would help with the small length of ridge vent, LOL!)