I'd say that basics of LP x LI are
1) If your guards suck at DR, avoid LI.
2) If your big men are way too powerful for any other players in your league, gather some guards with high DR and PA and you'll be good with LI.
3) Your SF matters the most on LI.
4) Regarding guards and SF, LI relies much more on DR than IS, which is not true for LP. And yes, your guards will try to post up on LP once in a while.
5) JS and PA on forwards and center will make your team run much smoother with LI.
6) If you've got a center with PA 1, you can run LP through him and end up with 0 TO, while he'll probably end the season with 0 assists and lots of TOs with LI.