I keep it simple. Spend enough time to choose the best parameters, and then save as JPEG. I use default sharpening unless I print big.
LR gives you much more freedom in the conversion than DPP. I wish it were not catalog oriented. For people like me, who use it as a converter only, "importing" is a unnecessary annoying step.
It is also much faster. Before LR I converted using DPP and then edited in PS. Add all the resizing and sharpening actions. A real nightmare. LR must have cut my PP time at least in half.
I typically choose Standard for output sharpening. In your opinion which is the better media selection when the client does not know what type paper they will print on Matte or Glossy? I usually go Matte as my guess is most don't go full gloss.