I think it may depend on how long you think you may be waiting. If you are high up the waiting list and there is a lot of movement in your area, perhaps it might just be a matter of weeks or a few months, then you might want to contact the school to find out which programmes they follow so you could use the same thing at home and your dd will find it very easy to slot in academically when she starts at the school.
On the other hand if you aren't sure whether she'll ever get into the school and you may be home educating indefinitely, then you can afford to adopt a relaxed approach and choose from any materials or approach which you think may suit your daughter. Some people like to follow a curriculum, though many of these don't buy in just a single curriculum but pick and choose from different suppliers for different subjects. Others make their own plan by researching various books and visits and experiments to fit in with their themes, and still others like me let the children decide exactly what they want to do - which may be very informal learning which looks totally different to school. All of these approaches are well recognised as valid and you can choose whatever seems right to you.
For that matter, even if you think you'll only be home educating for a short while, you could take a break from the school model and take advantage of the flexibility of being out of school. For example, you could do one or more projects based on your daughter's interests, whether that involves researching the space exploration programme or 18th-century fashion or games design. Or you could do some visits to interesting places such as museums and historic sites. Some families do a lot of road trips and the kids seem to learn a lot from seeing these places.
You may like to get in touch with local home ed families to see whether they have some educational or social activities you can join in with, or tips on local places of interest. I am lucky enough to live in an urban area with many HE families and we have quite a busy schedule with things like target shooting, ice skating, bowling, fencing, physics and philosophy.