Here Here to all those things listed!
Tatton Park is on my doorstep, it's National Trust but you have to pay for the car park, £4 a go, but you can buy a monthly £10, 2, 3, 4, montly pass at the gates as you go.
Then you can go as often as you like, great food although pricey, great gardens, adventure playground.
Knutsford is lovley too for a wander about.
Hale Village cute.
The Edge, up in Alderley is great for walks.
Have you picked up anyh of the free family type magazines, Little Tigers I think, normally in the library.
Have you stared an ante-natal classes yet, this will help you meet people and get to know the area.
Manchester has lots of great museums, all free, Manchester Art Gallery, The Lowry, URBIS.
There is also a world famous hat museum in Stockport, never been!
North Wales coast is also great, plus you have the Lake District all an hour and a bits drive away.
Lots of stuff to do!