Okay, this is what I've decided. Seeing that the past few updates of Thaumcraft have not gone to 1.7.2 and from what I hear it will indeed be a long time I"m going to say fudge it and go with Minecraft 1.6.4 as the base here with the following mods.

1) Forge (obvious mod base is obvious)
2) Thaumcraft 4 (4.0.3c)
3) Tinkerer's Construct (going with w/e the latest version is)
4) Biomes O' Plenty (Seeing that we can't do 1.7.2, may as well use this for biomes)

I'll get the server setup tonight and start a new thread about the new info and links to the mods you'll need.

Of course you are free to use mini map mods like Rei's Minimap or Zan's Minimap. I'm personally going with Rei's Minimap as I don't want to be too cheating in finding caves/dungeons and such. Rather leave that a mystery.