Ok, you guys will laugh at me, but I've gone and done another whole revision.
I found that Antec was selling their B-stock super cheap, so I snagged a NSK 2400 w/o PSU for $37. I would have gone for an NSK 3400, but they weren't offering that model for sale.
So, that changes things quite a bit. Mini-Ninja is back, and I need a PSU after all. Thought about picoPSU, but they are on back order until mid-May, and then I found an Enermax Modu 82+ 425W for $70 after rebate, and while that is overkill for my system, it seems like a good value and could be used in other builds in the future. Based on what I've read at SPCR it should be very quiet.
So my plan now is to have the mini Ninja fanless, to use one 120mm Scythe case fan, possibly put a 40mm Scythe Kaze fan on the NB, and then I should be pretty good to go.
Only problem will be that I've so enjoyed doing all the planning, I'm not sure I'll actually enjoy the rig as much once it's finished.
Barring any more changes, this should be the final build:
Antec NSK 2400 w/o PSU
Scythe S-FLEX 120mm Case Fan, 800RPM, Noise: 8.7dBA, Model: SFF21D
Scythe Mini Ninja
Enermax Modu 82+ 425W
Intel Pentium E5200 Wolfdale 2.5GHz LGA 775 65W
CORSAIR 4GB (2 x 2GB) 240-Pin DDR2 SDRAM DDR2 800 (PC2 6400)
OCZ Vertex Series OCZSSD2-1VTX30G 2.5" 30GB SATA II MLC Internal Solid state disk (SSD)
Trendnet 802.11n PCI adapter
Adesso 2.4GHz RF Wireless Mini USB Keyboard
Scythe Kaze 40mm Fan for NB cooling