Oook, alot of ground to cover here...
Does the New Jersey (WWII version) have wood or steel decks? I can't tell.
Her decks were teak, stained with 20-B Deck Blue stain. It's a commonly available color in Acryl, Polly-Scale, and WEM Colorcoats.
What FS color should the top of the turrets be?
Turret tops, and all horizontal surfaces, should be painted 20-B. An FS match for 20-B is tough, but it's approximately 35042.
Should the small arms (AA mounts) be colored differently from the rest of the superstructure?
20mm guns were not painted, they were gunmetal. Shields and bases were whatever the background color, or closest predominant color, was. 40mm guns paint the breeches and barrels 5-N Navy Blue, and paint the recoil springs black.
What type of seaplanes is the New Jersey carrying? Kingfishers?
I can't remember which aircraft the kit has, but NJ traded in her Kingfishers for Curtiss SC-1 Seahawks after her '45 refit. If they have a long greenhouse canopy and rounded wingtips, they're Kingfishers. If they have a bubble canopy and squared off tips, they're Seahawks. For Kingfishers, paint them in a 3 tone scheme, Dark Sea Blue upper, Intermediate Sea Blue on the sides, and Dirty White underneath. For Seahawks, paint them overall Specular Sea Blue (15042), you can also use 20-B Deck Blue, it has the same value.
How do you drill out these small portholes? With a very small drill, and a pin vise.
What do you use to paint the bridge windows? Typically, in 1/700 scale, I just paint them semi-gloss black.
Is scratchbuilding blast bags for the bigs guns necessary/recommended?
It helps, in 700 scale, a touch of white glue, applied with a pin, at the base of the barrel, usually does the trick. Wait for it to dry, then paint it, in this case, 5-N.
How on earth are you supposed to start the photoetched railings? (By the way, thanks to jamnett for the supplies.) One section at a time, from the centerline of the ship outwards to the main deck (which should be last). I typically cut a length, make sure it fits the location I'm setting to, and then touch one end into a puddle CA. Set it in place, then touch CA to the inside of the rail where it meets the deck. Once you have it tacked into place, I use a very fine glue tip to lay a bead of CA along the length of the rail.
I'm kind of overwhelmed by the photoetched parts, any tips or advice? Take it slow...pretend you're doing surgery. Measure twice, cut once. If you screw it up, tear it off and start over.
Hope that helps...it's 2am here, so I think I'm heading for bed...have to be up in 3 hours...
Jeff