Welcome to the forum.
When it's time to buy a boat, the first thing you want to do is
purchase the
anchor. As anyone worth his
salt on this forum will advise you,
buy the biggest anchor you can afford. Now
purchase chain to match, at least 100 meters of the stuff.
Now your task is simple:
buy the largest boat you would feel safe sleeping upon while anchored in a gale on the anchor you've purchased. But don't buy too small a boat; the vessel must be large enough to make retrieval and stowage of the anchor practical. (This is the tricky part.)
Here's the cool part:
don't worry about your friends. Once you have an anchor and a matching boat, friends (a.k.a. "crew") are easy to come by.
To recap, here are your new priorities in life:
1) ground tackle
2) a boat to match the ground tackle
3) friends (crew!) to
service the boat