I thought that sounded like a big patch!
It may be helpful to you, if you mention the soil type and aspect ie shady, sunny, also dose it need to be hard wearing ?
It's sunny and shaddy! There are quite a few big trees on the edge of the patch. The soil is mostly sandy, and we are looking for something low maintenance. Hard wearing would be good, but not the most important factor as it's not a main garden area.