Try out a full body or upper lower split. You don't have to do SS. If you are going to do SS then add in some work for the mirror muscles. If you want to look better then you need to put on muscle which is going to require an increase in strength. Your strength for reps is going to be more significant for your size gains.
ss isn't broscience in fact is follows what has been found in science fairly well. Training till failure isn't needed at all.
Are you going to achieve yours?