Hi Ipsos.
That's a difficult one to answer, as I suspect we are very different people!!
For me, work does add an additional layer of stress to my life. Life would be easier if I didn't work. But, it wouldn't be better iyswim? Work adds to 'me', and the years I worked when the DC were your DS's age were worth it now my DC are teens. Teenagers need you more, but less, which is hard to explain until you have them. So it's easier in terms of logistics, but I'm still around a lot for them too.
For me, I feel work gives me a focus that isn't my family, a whole set of skills etc, and shows the DC a different side to me. Also, they have had to be a touch more independent, no bad thing, at 14 and 16 they are pretty proficient domestically, I never had to lift a finger. There were times during the holidays when they had to go to a sport club/holiday club that I felt crap, but they did actually love that kind of thing. To be fair, they had no choice, I had to work, so they had to go. Simpler in a way.
Re the cleaner, I don't ever feel I have to manage mine. They come in and clean the house and leave. Both of mine have been lovely. I occasionally ask for something specific, which gets done, usually not. I think that's a worry only if you let it be so. You alternative is a professional cleaning company, which might be more expensive but less stressful.
You rate of pay is good too.
I find the more time I have available, the more I worry and think, I'm better just doing, I often get through more on a working day than non working 'cos I have to!!
Good luck.