Honestly, L/P couply scenes were basically non-existent in my mind. In 3x16 they barely touch at all, and it was pretty clear to me that Logan was trying too hard. You already know she's not in 3x17 and is in fact barely mentioned. The only really couply scene between them is in 3x18 (the only time we ever see them kiss, and it's basically a peck) in Logan's suite, during which Parker stupidly thinks Logan is asking her to move in with him, but all other scenes between them in that episode bascially serve to highlight how NOT into her Logan is. She's not in 3x19 and there's only Logan's side of a phone convo, and he still seems to be going through the motions. Their only scene in 3x20 is the breakup, and it's basically all about Veronica.

Anyway, just wanted to give you my take, in case there are any you might want to watch. I found L/P extremely inoffensive the entire time.

As for V/P, other then after the kiss in 3x16 (which you can get the gist of from screen caps of Logan's expression and then Veronica's as she watches him walk away), there's the elevator scene in 3x17 where Piz shows up at the very end. I don't think that one would bother you at all, even with Piz. The beach scene in 3x19 is only good for Logan being as ass. Pretty unimportant. But I highly suggest you watch the Logan/Piz beatdown. Piz basically runs away at one point. It's too hilarious (and Logan storming in is HOT). And of course you've already seen the end of 3x20.