McGugan will be a loss. The signing of Mackie is a very good one though. He was a key player when QPR won the Championship 2 seasons ago and this could be a good move for him. Were they to get Austin as well, they won't be short of goals.
If they buy Austin he won't be cheap and that will get them into FFP trouble if they don't go up. Yet another team having a big bet on promotion or bust.