Timothy Murphy wrote:
[...]

I've got the use of a roller,
so I'm going to use that to level it.
The soil is a little heavy here,
perhaps because there has been a phenomenal amount of rain.

Whoa, there! The roller is a bad idea, especially on wet heavy soil: it
may give the appearance of levelling, but I reckon the high spots will
pop back up in due course. You also want a rather loose tilth for the
turf to get its roots into, not a compacted surface.

Jake's advice is excellent. (Though I favour seed, myself, unless speed
is of the essence.)

[...]

--
Mike.