Keep in mind that both the pictures you posted have a high plant content. Plants cost money, and require "food". You have low light, and no CO2 system, so this means you'll need very little fertilizer too, but that doesn't mean you shouldn't consider using any.
I've never heard of CO2 TABS personally, but if you're going to use them I would imagine they would dissolve more than just CO2 into your water column. While shrimp are great, and can require next to no feeding (and have nearly microscopic poop, so little clean up required) they do require fairly good water parameters
which means a TDS between 100-200 preferably. One of my two shrimp hides all day and never shows himself unless my water has very little dissolved solids. This is often measured with a $20 device called a TDS meter. My tap is pretty high quality and comes with about 90-100 TDS, but your water could be completely different, it varies greatly, sometimes even suburb to suburb. You MIGHT find out what your TDS is supposed
to be if you can find water stats for your area. Try googling your town name and the terms water quality report. Even then, this data may be off.
I'd recommend fish over shrimp for this reason. However, if you prefer shrimp you could consider topping off the tank using bottled water. It's small enough that this shouldn't be TOO expensive to do.
Most of what you have in those pictures are forms of moss, some of which look terrestrial to me (meaning they don't naturally thrive in submerged conditions) but I'm no expert.
Some mosses do great with little work, and no CO2, but if you want that kind of plant density you'll have to buy a lot of plants at the get go (more$$$) or you'll need to start the tank without fish/invertebrates and use some form of co2 (see flourish excel for one option) to help the plants you've put in there "fill out" their space. You would need more light too, to match your CO2 level.
Ultimately this isn't the easiest hobby in the world, so don't expect it to work flawlessly the first time, just like anything else, you'll run into troubles and need help adjusting things. That's why the forums are here.
Lastly, just to give you an idea. I've had my 10gallon for about 5 months or so now, and I've only very recently gotten my light level, fert level, and co2 level (ambient, I don't use any artificial CO2) to balance out so that my tank isn't constantly crawling in algae. If you'd like a nice simple guide for low maintenance tanks check here: http://www.sudeepmandal.com/hobbies/...ed-tank-guide/
That site is where I got most of my information. I didn't plant very heavily (which he says you need to do) so I had to cut back my Fert dosing, and how much I fed my fish in order to balance things better. Only now am I starting to see growth. So over 5 months my amazon sword (way too big for this tank in the near future I'm sure) has doubled in size, and my micro-sword has finally begun to grow,albeit very, very slowly. If I wanted a nice "lawn" effect like in your second picture it'd take me another 5 years at the current rate I would think.
All that being said, that doesn't mean don't try it, it means do your research and be willing to adjust when things fail. There is no fan of this hobby who hasn't had to work through the kinks to get what they wanted, fairly safe to say that's true.
Bump: PS: here is a rather helpful list of "easy" plants that won't require as much work to keep. They aren't exactly what you're looking for, but if you want things low-maintenance then you'll need to find the plants that match that. Good luck!