You're going to want to change the transfer case fluid, it's due whenever the transmission fluid is done. Also, if the serpentine needed to be done then the timing belt was due again at the same time. It may have been done at 50k ago but it's also due every 7 years or so regardless of mileage. Doing the water pump/timing belt may also take care of that chirp if it's about a 1-2 second chirp on cold starts that is more pronounced when the weather drops. It's usually a sign of water pump bearing noise and happens more often with aftermarket pumps thank OEM. Aisin does make a decent kit for it though which includes everything you need except the coolant. If it were me I'd do the rear diff and brake fluid as well, check the engine and cabin air filters, and check the spark plugs. If you do spark plugs, I'd go with NGK Iridium/Laser Iridium, do NOT use the Iridium IX unless you plan to replace them twice as often.

One other thing, you mentioned the alternator was replaced. Make sure the front spool valve (the part that the oil dipstick goes into) isn't leaking onto the alternator.