New Yorker may be a very good choice for a late-season variety, Bay'.
Tomatoes are a mystery to me. Growing outside of my area is a mystery to me ... heck's fire, growing in my area has too many mysteries!!
We read that tomatoes grow wild in one of the driest places on Earth. I get the idea that they are on the low elevation, shoulders of the Andes. The very high mountains put them in a rain shadow. And yet,
@Beekissed can report that her plants are looking good after going through weeks of rain.
Lots of people in the south say their tomatoes burn up during the heat of summer. With a long growing season, they plant for a second crop.
Determinate growth must have been something bred into tomatoes fairly recently and I can hardly believe how early some of them are. Gold Nugget can produce lots of cherries months before my first frost! Unfortunately, the last fruit coming off the plants will have disease problems as the entire plant begins to go downhill.
Determinate Legend is a nice beefsteak. It isn't an heirloom; the "legend" is the horticulturalist it's named for

. Whether those plants would be okay with a longer season, I don't know. Maturing ripe fruit is just about perfect for my gardening season. Legend produces as the weather begins to cool and
all tomatoes slow.
We will see how New Yorker does in my garden, started about the same time as all my other varieties in late winter. They are open pollinated so we can save seed

.
Steve