Bluestem Nursery provides listings of OG's for specific landscaping conditions, including sun/shade, drought or salt tolerance, height etc.

Here is a link that might be useful: Bluestem Nursery

OG's will do great in your space. Chances are, there's no salt in your soil, as salt is highly soluble, and would be washed out by rain. Salt air is another thing entirely, and I've found that most plants tolerate it just fine. I live beside a saltwater canal, and grow all sorts of grasses and other perennials with no problem.

I doubt, also, that your soil will be salty. We are on sand here, in some areas of our yard, by our creek it's almost like play sand. Ornamental Grasses do wonderfully, and I never amend the soil for them. Go for it. I like the miscanthus for specimens. Polly