The housing market will always go up and down, but in the longer term, the value of a property will always eventually increase.
If you're living in a property and don't plan on selling it, all you need to worry about it whether you can afford the repayments.
This is a very personal view but I don't believe in putting your life on hold to try and get maximum benefit from the housing market. There are so many variables, I just don't think it's worth it. You might not be able to find the right house next time, the mortgage deals might be shitty, and of course you'll be shelling out for rent for all of that time - and that's money that could be going towards paying off a mortgage.
If you have found a house you love, and you can afford it - including stress testing - then I wouldn't think twice. I would move now.
I bought a house at the top of the market in 2007 just before it all crashed. I am sure I was probably in negative equity for a while but it didn't occur to me and I didn't ever consider whether I might be. Fast-forward to now and I'm selling - the value has increased by around 40%. And I bought this house in a bidding war and had to pay top dollar for it. And yet I'm still going to make a profit - let alone considering the money I've paid off my mortgage in those years.
I've just bought what might be my forever home (I've got a ton of other threads explaining our very unusual circumstances!) We bought last year in a bidding war, and probably paid close to top dollar again. But we love it, and there was nothing else like it. I'm still delighted with our purchase and I don't really care if the market crashes. In the long term the property will increase in value anyway, but in the meantime we get to enjoy a beautiful home that we love.
Other people might have very different views though and there isn't a "right" answer. It really does depend on your priorities, whether you plan on moving, and what you feel comfortable with.