Trainers I do my own thorough clean during holidays, though it isn't much fun. When money is more settled, I will give serious thought to doing it how you suggest, so someone else deep cleans and I maintain the rest of the time. This sounds more sensible for me as, like Miss, most of the cleaning that gets done at mine tends to be the centres of the room. The edges just get more and more gammy until I sort it out in hols 
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I've just spent an hour writing a really detailed meal plan and shopping list. This is my main challenge. Because of work demands, we often end up picking up something quick from the supermarket. I am pledging here and now that whatever the events at work and what I need to do urgently, I will take the time to make a meal every day. None of them are particularly demanding - 3-40 mins or so, max, but I think this would tackle the majority of my overspend on shopping.
Ultimately, what I am saying after 12 years of teaching FT and managing a busy household is that I need to get far more organised if we are going to get through all of this and settle into liveable patterns. Most of my financial crisis has arisen from letting work take over my life, paying for quick fixes and placating children largely out of guilt that they lose their mother so much. This year will be the toughest yet in terms of work, so I am now going to get STRICT with myself that certain things, like cooking and cleaning, need to be given time every day and we will do something as a family every weekend - a walk out and a Sunday dinner - so I feel we are having proper time and I'm not just sitting at a table, surrounded by paper, ignoring them.
I am also thinking it will be good for weight loss - proper meals and cleaning to burn kcals, as Talkin says.
Let's see if I can do it. It will be tough.