Here's a sketch based on the pictures you posted, with annotations color-coded to the markups on the photos below.
The boom appears to have a toggle, which is expected as it has to swing side-to-side as well as up-down. There should be a fitting on the mast to accept this toggle. The boom suspension appears to originate where the yards mount, and there will be a lug or clevis on the end of the boom to accept the bottom block. On the bottom of the boom will be another lug or clevis for the upper load block.
The shrouds are presently terminated at the top of the mast, and there will be chainplates or deck lugs for the lower terminations. The will mount aft of the boom tabernacle, as they counter the forestay (for fore-aft stability) as well as each other (for side-to-side stability). The forestay is not visible, but there will be an attachment point on the front of the mast, in the area of the shroud terminations.
It looks like the anchor light and masthead light are both there. The masthead light will attach to the front of the mast, which is facing down in your pics, high enough to clear obstructions and not cast annoying light into the fly bridge area.
I have no idea what the bottom of the mast looks like, though, as it should either socket to the deck, or pin to that clevis.
The yard arms are only there to hold antennas, possible spreader lights to light the deck like sailboats often have (not present, though), and even flag halyards, but they're not actually spreaders as the shrouds terminate at the mast.