I'd honestly want to to find a cheap 4/5 type defenseman at the deadline and keep Tarasenko. If Tarasenko still wants a move, then do it in the summer.
I'd want Chiarot and Tarasenko over Lindholm and whoever we'd have to move off the roster for Chiarot. Or maybe Dekeyser. I'd much rather get a moderate upgrade to the 3rd pair, someone of similar quality to Scandella, so they could top 4 in a pinch. And revisit the top 4 upgrade in the summer.
When healthy we have a really good offense, but I'd be worried that once we remove Tarasenko, if we aren't fully healthy, we'll start to really struggle to produce.