We had a death in the family this weekend, so I haven't had the time to spend on this... We've the funeral next weekend, so hopefully we can get squared away before Friday...
Looking it up at tfd.com, I am confused about the meaning. Two meanings seem to match:
To bring (oneself) into a better position or relation (He tried to square himself with his parents.)
To put away or in order
But since the person has directly written 'squared away', so I think the second one matches better.