It's impossible to say how much space we'll have at the TDL, but if we are counting on non-LTIR space, we'll have very little. It will be basically money in/money out at that point. If Kakko (or another player) is on LTIR from the TDL to the end of the season, then we'll have whatever cap space that provides. With Kakko, it's a max of 2.1 mil (probably a little less), so forget adding anyone who has a cap hit higher than that.
Basically, we have to just wait and see how things look in terms of injuries come the deadline.