Should I Defoliate these autos they are on day 54?

Only if there directly blocking flowers ,you got long way to go otherwise ,take more off later

No hagas eso, por que vas a perder producción, el cannabis toma la luz por sus hojas, ninguna hoja sobra en una auto, saludos

I would defoliate for better light penetration myself...?

Why and what for?? They look happy and healthy. Defoliation for no real reason just reduces your plants capacity to produce enenergy, therefore reducing vitality and growth. Right now, during flowering is when your plant NEEDS maximum energy to grow its flowers, so I ask again... why and what for? Personally, I never remove ANY leaves unless they are yellow and am rather anti defoliation (which is largely misunderstood in the cultivation community). Besides, if your plant would not need those leaves, it would not grow them in the first place! Leaves are your plants "solar panels" that make ALL the plants energy it needs to grow. Less "solar panels" = less growing! It really is that simple. Unless you are having massive issues with humidity, I would strongly advise against removing any leaves "just because". Hope this helps, Organoman.

I have come across an absolutely fabulous article on defoliation - the WHY, the HOW and the WHEN... it's a rather long article but it's now part of my "bible" in my grows... You might find it valuable, too... https://www.growweedeasy.com/nebulas-super-simple-3-step-defoliation-tutorial Good luck! Your grow look magnificent!