10e - Insurance.
Steps 1, 2 & 3 are all well and good but you should focus on the features you are looking for in a boat and less at an actual boat. I have just spent 4 months researching the boat I wanted and narrowed it down to two boats. I was planning on buying in the spring but a great deal just came up and I am in the process of finalizing the purchase of a boat that wasn't even on my radar but does have the features I was looking for.
I'm in the middle of step 10 on your list right now.