For that money
you can get some nice custom 40ft Graingers, Chamberlins and Pescotts, maybe a Schionning or two. Faster than the Lagoons and they all the Australian type design where they sail nicely but still have good accommodations. I love sailing my Chamberlin - it is so fun to feel her slip along in light winds or pick up her skirts in a breeze. I feel a bit sad that Auusie sailors are buying
the French cats - I get that they are roomier but our modest 38ft cat is more than enough for my wife and I. I can't understand what we would do with any more room.
Consider outboards IF the boat can sail. I have had a single outboard
setup for 16 years and would not take a diesel
if you gave it to me free. I have had one problem with my outboard
when I gave it bad fuel
. They smell less, are just as or more reliable than diesels, don't need folding props, can be quiet, are faster under sail and are just as safe as diesels - the reason they can be just as safe is because they are hanging below the boat so your fuel tank
and all lines go there - not inside. This is safer than having it all inside a locker or internally. The common caveat with petrol is that it explodes - it can but you will probably have petrol on board for your dinghy
outboard so it is a question of how much petrol - not whether you will or won't have it.