Quick backstory.  6 feet tall, 190 pounds.  Been training off and on for a couple months.  
So I really suck at squats (max 235) but I feel like my unilateral strength is ok.  For instance, I can perform consecutive pistol squats holding 35 pound dumbbells in each hand.  It seems like I can much more easily "express" strength with unilateral stuff than I can do with squats.  So should I just work on BSS and lunges and "max out" with those and then go for squats?  My squats have completely stagnated and I'm not sure why, whereas I feel like I can make quick decisive gains with unilateral work.