October 12th, 2017:

	Well, I'm a step further!  The missus and I both decided we could 
afford to buy ourselves something this payday, as neither of us have spent 
money on ourselves in a while.  I'd originally planned to buy a PC Engine 
interface for my Multi Game Doctor backup unit, but ultimately decided 
against it... I'm trying to spend less time in front of electronic devices 
and more time with my family and the outdoors.

Instead, I ordered a 20" rear wheel for my folding bike.  Rather than hold 
out for a wheel with an internal geared hub (as mentioned last update), 
I've decided to build a single-speed bike instead.  I have a 44t chainring 
on the bike right now, and after consulting the late Sheldon Brown's 
online gear calculator, am going with a 13t cog on the freewheel.  It 
seems to be the optimal gearing, although I'm going to order a 56t 
chainring and 12t and 14t cogs as well, just so I can experiment with 
different gear ratios.  I'll dial it in one way or the other!

After that, it's just a matter of buying tubes, tires, new cotters for the 
cranks, and bearings for the front wheel, and then my bike will be 
roadworthy.

Then I can start customizing...