If your crossing oceans I would go for the
solar arch, however I don't think
davits are a good idea in the ocean.
Find the smallest, lightest
dinghy you can manage alone and carry it lashed on the fore
deck..
davits are great for short coast hopping trips and may look okay but.. the
dinghy adds windage aft, is hard to lash securely to stop it rubbing and is generally more bother than they're worth.
You could opt for what I did which was to have a made to measure
solar arch that raked over the stern with fittings for a couple of blocks so it doubled as dinghy davits for inshore sailing on a Bene 331 I bought... however I still carried the dinghy lashed on the fore
deck on long trips.