Great to hear that you are now a boat owner. Dont try to do everything at once. There is always a great pressure to finish everything off as soon as possible so tha the boat can go in the water
and you can start sailing. Divide your list of tasks into 3 sections:
those that need doing to get her seaworthy
+ those that need to be done while ashore,
those that are essential to safe sailing,
those that need to be addressed fairly soon.
remember that even the preperation of the boat is supposed to be part of the fun time so relax, and spend time talking to the other boaters doing the same tasks It will help to get tips to do the job faster, and makes it easier to grab an extra pair of hands when needed.