Looking for a yard/woods grass that fits these criteria:

[Thrift Store Scott]

Dennis S wrote:
This can't be mowed for probably years.

Fescue might not be the way to go, then... unless you can find a particularly short variety.

Rather than, or at least in addition to landscapers, I'd call your local county agricultural extension office and ask what their recommendations are for planting the area, particularly native plants or grasses.

In the short term slinging a couple of bags of wildflower seed over the whole area couldn't hurt either, but since it's already almost June you'd probably want to go with the Fall variety mix if you have a choice.