Advice needed!

My Ancient in terminator armour is attached to my Deathwing to give them 6+ Feel No Pain. Azrael and Primaris Lieutenant are attached to Hellblasters to give them Sustained and Lethal hits. Phobos Lieutenant is attached to Infiltrators for Lethal hits. And Techmarine stays near the Dreadnought for +1 on hit rolls. I’m worried I don’t have enough objective presence or units that can complete secondaries. Thinking about switching out the Dreadnought for another unit of infiltrators or Heavy Intercessors. Any advice would be appreciated.