Agree with the comments, but I'd add that I think Ainge will also think opportunistically. If a quality long term complimentary player is available, he's got to pull the trigger and worry about money later.
This is a good team. If we were able to grab a really nice player because someone wanted to shed salary, you have to do it when it's there, because you don't always get a chance when you want one. Free agents are fun to think about, but there is competition, and you might very well not get one you really want when its convenient. You have to pull the trigger if you are lucky and have a shot at someone really useful.