Having bulging disc's alone is not a big deal unless you have low back pain or pain in your legs (radicular symptoms). How old are you? A significant percentage of the population over 30 (even 10 or 15 % of people in 20's) have disc pathology that shows up on MRI. These are asymptomatic people.
So it depends on how severe your symptoms are, if any.
If you do have a tendancy to have back or leg pain it is extremely important to nail the form for deadlifts. Start with your ass down low, and keep your spine in a hyperextended position. When you let your spine flex, curve forward into a kyphotic position the pressure placed on the disc complex is exponentially greater. Very important, keep chest out and back extended in lordosis.
Doing partial deads off a power rack set to where the starting point is just below the knee caps can also help if you have some back issues.
You might be a pro deadlifter if so sorry. If not figure out how to do it right. It looks like an easy lift but there are some details that i see people getting wrong all the time. They fuck up their backs.
As far as doing 135 for reps, probably better than nothing but you still have to get form right. Personaly, i respond to deadlifts at high weight in the 3-5 rep range.
If you look at my MRI it looks like shit.