Limper is unknown, Iso has taggish stats.
Our hand is not very good multiway and our position sucks but I think we can win enough money of a (probably weak) limping player to justify playing it.

I think that a lot of the hands that V cbets have some equity against us although we very likely have the best hand (e.g. any QJ). Thus we want to raise for value. I chose a smaller sizing because I wanted to make it more likely to be called by the weakest part of his range and because against his best draws we are not even pushing that much of an edge.

80% pot for value seems standard with the assumptions we made before.

I am really not sure about my check since QJ will probably just take the free showdown and might call a small bet. The reason to check, aside from sometimes being beat, is that it allows him to make a hail mary bluff with the lone Ah and I would like it much more if the river was a low heart. The problem with betting small is that I don't know V well enough to know wether I am supposed to BF or BC and chosing the wrong line is a huge mistake and checking avoids this.