you can never go wrong with a white oak (Quercus alba)

A septic field 200 feet away should not represent a concern in choosing a tree. Consider whatever other factors you think important, and stop worrying about the septic field.

Liriodrendon tulipfera, called tulip tree around here, grows fast and has the shade tree shape.

Metasequoia grows well in most of Kentucky but is pyramidal as far as our lifetimes are concerned.

The oaks have a bit of an unfair rap as slow growers. I say pick one with fall color that grows well.

Hard to go wrong with an oak, but there are are plenty of good choices in other species.
My fave is the bur oak - native to KY, tolerant of a wide range of soil types & pH, drought-resistant once established fast-growing yet long-lived; large green leaves, corky bark, even on 1-yr twigs, interesting acorns, and striking winter silhouette. Fall color? None to speak of - but it's a standout the other 50 weeks of the year.

Here is a link that might be useful: Bur oak

Here's another good reason to plant a Bur Oak...

VV,
Is that the one?
Gonna start grafting some today...