yes, deads are a big draining exercise plus your legs get torched every week, doing heavy deads every week will lead to burn out in no time. to put it in context, ive come back after up to 3mths not deading and been up at my max with 2wks, simple reason being that all other associated lifts keep it there or there abouts.
pyramid your deads, mine looked like this over the summer (pre toe breaking)
10 60kg
8 100
6 140
4 160
2 180
4 200
4 220
2 240
2 250
in all honesty, id junk the hack squat, ive seen more guys wreck their knees on this lift than any else, i personally cant do them without feeling my caps are going shoot off.