"Place for a dinghy" is an eye catcher here as well as "large" cold storage. Hmmm. Dinghies can be kept on cabin tops as in an extended flying bridge like europa-style boats have, or on a set of davits over the stern, or on a Weaver-style system. You usually lose the easy use of the swim platform with the latter two. Large cold storage as in a full-sized household refrigerator means a fairly expansive cabin, and how would you power it underway and at anchor? There are many options for built-in cold storage systems run of engine-driven cold plate compressors, solar power, etc, etc, but you might have to find the boat you like and then custom build/install that generous and efficient cold storage system you desire.
The head in that size boat will be smallish, and separate shower takes up room you could use for a refrigerator.
And lastly, welcome! Good health to you! We are glad to have you here and hope to follow along with your adventure.