You are welcome, and no worries, I do understand the aggravation.
Did you end up ordering the LIM gasket from Advanced Auto, or RockAuto?
Rock auto has it for a lot cheaper, so does Amazon.com
I also think getting a new LIM gasket is good to do, better safe than sorry, the old gasket was probably fine to use, but again better safe than sorry.
The oil in the LIM usually comes from the oil wicking its way up the LIM Bolts, especially is lock-tite is used on them, instead of thread sealant, even when thread sealant is used it can still wick its way up them after time, every one of my bolts had oil all the way up the threads.
The oil in the UIM usually comes from the PCV valve.
As for the coolant ports on the throttle body, if you do not live in a constantly freezing cold climate, then it would not hurt to tap/plug them, I chose not to because I went with a new UIM, and installed the reduced diameter EGR Stove Pipe, so I was not too worried about throttle body leaks, externally anyway.
I kind of wish I had blocked them off now, but when you block them off to keep the coolant flow volume as it should be, I have heard you need to remove the coolant water bypass on the right side of the LIM, and use a grinder to open up that area a bit, of course many do not do this, and don't have a problem with cooling, but if I were to block mine off that would be what I would do.
If you block them off you will need the 1/4" tap/die, here is the one Justin recommended.
6 Piece Pipe Tap & Die Set
As for the fittings, I am not sure if these are as short as they need to be, but these are similar to the ones you'd want to use, maybe you can find something similar from your local hardware store..