I did planting last weekend and the plants are struggling. I think most will make it through, but it has required a lot of attention. Some will not make it. I'd hold off until cooler weather in September if you could.
Please don't plant heavenly bamboo. It's considered invasive in this area and the seeds contain cyanide. Usually not enough to kill most birds but there are some that are gorgers like the cedar waxwing and they can ingest enough cyanide for the seeds to be deadly.
http://www.oregonlive.com/hillsboro/index.ssf/2013/12/heavenly_bamboo_the_red_berrie.html
Florida leucothoe (Agarista populifolia) and Yaupon holly (Ilex vomitoria) are recommended as alternatives for heavenly bamboo in this area.
https://www.dgif.virginia.gov/wp-content/uploads/native-alternatives-to-invasive-plants.pdf
Note that tall fescue is also on the list. I don't know whether fescue sod is considered invasive, but you could look at native alternatives like Pennsylvania sedge.