I'm not sure that doing it for a week would give you any real idea of how Home Education would be, unless you are planning to do it in quite a formalised "It's 9 o'clock we're going to do learning now" kind of way, which most HE parents are actually trying to avoid.
My DS was HE for 2 years, just because it was a practical way of giving him a tailored education which couldn't fit into the available schools, so I'm looking at it from a different perspective than you - assuming you are thinking about not sending your DC to school when they reach that age, rather than taking them out of school because of issues there.
The massive advantage of HE is that you can genuinely tailor the education to the interests and abilities of each child. It's not at all unusual for an HE child not to be reading at 5, because education is about a much wider range of things than meeting expected targets at standard ages. In many countries, children won't start learning to read till 7 or 8 and quickly reach the same level as those who start being taught at 4.
An older HE child will not automatically study "Victorians" and "The Home Front" because those are this years history topics, but maybe wants to know about castles, the Vietnam war, the history of motor sport. They don't have to do 10 GCSEs at age 16, but can do some or none at whatever age suits them.
Obviously they won't have covered some things which they would have done in school - but if they learn to be confident with literacy and numeracy, and have transferable study skills - the ability to search for information, decide what bits are relevant, summarise that in their own words, put across their own interpretation etc - then they will be "educated" people, and be in a good position to live happy and purposeful lives.
If you want to try it out, I'd say you should consider using the "preschool year" to do that. Then you can see how you and your DC get on together, and join local HE groups to see what activities and support are available. If you don't feel it suits you or them, you can still send them to school.
HTH