Kev, a couple of suggestions for what they're worth.
- Decide on the plane you wish to depict, then find out for certain if its a Nakajima or Mitsubishi build. This impacts pretty dramatically on correct colours. For instance, the two manufacturers had slightly different cockpit colours; Nakajima painted certain steel parts within the cockpit black but Mitsubishi didn't; Mitsubishi wheel wells and gear doors were all the underside green/ash/grey but Nakajima gear doors (inside) had the Aeotaki laquer finish; and, the demarkation lines between topside and lower camo colours were different etc etc.
- If you haven't already, trawl through the J-Aircraft website. Check the article by Ryan Toews on enhancing the Tamiya kit and search on his name in the Navy planes forum. Don't forget to check out their walkarounds section. Its the best source of Zero images on the net that I've found.
Happy modelling!
PS. I recently realised that after heaps of agonising over how to mix up a "correct" underside green/ash/grey colour that Tamiya released a bloody fine match to go with the A6M2 - XF76 - straight from the jar! Oh yeah, also I found out after even more agonising that Tamiya XF71 is a very passable match for the Mitsubishi cockpit colour.
Thanks Koala. I bought jars of XF-76 & XF-71 during my shopping spree last weekend (from whence came the book).

I also bought XF-75, listed as "IJN GRAY (KURE ARSENAL)" and XF-70, listed as "DARK GREEN 2 (IJN)". Not sure about these last 2 colours, but I've got some old jars of their Gunze equivalents to fall back on if I need to (and if they're any good still).
Pick a scheme
first - now there's a novel idea! I often can't make up my mind until so late that it delays the painting process!

I'm keen to start on this one, but at the same time I realise I need to do a fair bit of reading first, or at least before getting too far. Oddly, I can find hardly any useful reviews or build-ups of this Revell kit on the web. I was hoping for a quick heads-up on where it's major accuracy problems are, but I guess I'll have to determine that for myself.
Hopefully some actual modelling photos soon!
Kev