This is the sensible solution, you will then have an idea on coverage and also setup instructions to work from to make your decision.
You don't always have an opening where it maybe the best location to place a shock. So normally separate unless you know the kit will work there.
Wireless are often combined units depending on manufacturer, but you have a bit more flexibility with aesthetics then because no wires.
Not saying you should fit wireless, just a observation that you can then have everything fitted and worry about positioning after with wireless.