I'd start a solid first choice team from those available—Martinelli can play an hour, you'd hope.
Perhaps Partey in for Jorginho, but I don't think we should care too much about it. Partey's got a need to sharpen and strengthen up after his long absence, but it's just as likely he'll break down again.
Given our settled outlook since Havertz started performing decently well up front, the best way to rotation over this period will be killing off weaker opposition like Luton sooner, then rolling the subs.
We should aim to profit more from the template that led to goals raining down in January and February—if we can, it will mitigate all the forms of fatigue. Last thing we want is too many tense final half hours.