Don't put all your eggs in one basket and have only one hunting strategy.It should be dry that time of year but you never know.One good rain can make waterholes go dead for days.
Keep an eye out for terrain that has antelope but topography or cover that would allow for some stalking.
Sometimes the first day or two are better spent using glasses and figuring out the animals and the country.
Don't be afraid to think outside the box.Antelope don't jump fences like deer so sometimes that creates opportunities.Last year I sat in a blind facing an open gate between two,huge,irrigated fields.There were antelope in both fields.On opening day I shot my buck 13 minutes after legal shooting time.There was plenty of feed in either field but sooner or later,a group of antelope will decide they need to join the others in the other field.They do it off and on,all day long.Just a simple open gate.
Just study the country and the animals and see what you can figure out.Nothing wrong with sitting on a water hole,just always have a backup plan.