One thing that I've noticed is that hellstrips are usually compacted to all hell (in the southeast by me at least) since all the utilities guys compact the ground after burying something, so even natives might struggle if they need to be able to shove their roots more than an inch into the ground. I'm all for sprinkling seeds about, but see if you can look for some that are creepers rather than deep taprooters

Any rough hint on your location for native planting advice?

I've seen people get packets of native wildflower seeds and just toss them over the ground. Since they're native, they should do ok without much help from you.

Presumably, it gets mowed? If not, I'd say to find a local wildflower mix and sow it in late fall/winter. Lots of plants tolerate this well cause it's how they naturally reproduce. You dont have to worry about water as much that way because they sprout and start putting down roots way before the weather gets hot and dry.

Another thing to consider is salt. If that area gets exposed to a lot of road salt, it might cut down your options a bit.