[QUOTE=SAcres;6163720]
I don’t really have a lot of room so a 10 gallon wouldn’t work for me. the 6.6 gallon is long but it isn’t tall so I can fit it on a bookshelf. 
This is already going way over my $100 budget with no way I can see to bring down the cost.
Have I gone completely overboard on everything? I want a heavily planted tank for sure, and I want to try to cover all the driftwood with moss, plus moss going up the back of the tank (if I can figure out how to do that).
Maybe I’ll eliminate the moss covered driftwood and the hidey rock. That cuts things down to under $200 at least.[/QUOTE]
You kind of have gone overboard…
Here’s part of the problem with nano/small tanks - most of the stuff that you want for them isn’t scaled for them at all - so you’re often better off buying things in person, from your local fish/aquarium shop because you can figure out that that driftwood is going to completely overwhelm your tank.
When it comes to planted tanks, you’ve got it right - just wait for stuff to grow! It will, and then you’ll have to go through and weed it. Those gorgeous tanks that you’ve seen online didn’t start out looking like that! The other thing to consider is water parameters - just like fish, some plants will be happier in harder/softer, warmer/colder water or light quality. The last thing you want to do is to spend money on $$ plants (and btw, seriously - $15 for Java moss? That’s highway robbery! Most planted tank people would give it to you for free!) to find out that they don’t like your water - a friend of mine could not keep moss balls (despite the fact that she really wanted to) because they did not handle her tap water… Start small, you can always add!
And SERIOUSLY consider the bookshelf that you’re planning to put the tank on! Will it hold the tank and all of it’s contents safely? (Water alone in that tank is going to be about 50 pounds - not counting the weight of the tank, substrate and other stuff…) That was one of the first things that came to my mind when I saw them advertise it as a “bookshelf” aquarium.
EDIT:
Talk about perfect timing - this is the evolution (over about a year and a half) of a friend’s 120g planted tank.
http://s649.photobucket.com/albums/uu211/aquaristics/120g/?albumview=slideshow
The top three pictures on this link: http://www.guitarfish.org/2012/02/22/raleigh-aquarium-society-workshop were taken last weekend, I think - same tank as it looks now.