Are you planning on vegging and flowering with these lights?
Between the HLG 100 and HLG 135 You should be able to get decent coverage if you keep your flowering footprint to 6 to 8 square feet (closer to the higher number if the walls around your space have high reflectivity).
As far as the "HLG 288 QB's" , that is the board used for the HLG 135. Do you have a driver for it, and if so, which model?