I don't use any fertilizers, at least not yet. From what I've read, Eco-Complete and similar products are very good.
Even with the Eco, you should fertilize through the water column.

Especially with the amount of light you have and the DIY CO2. Your plants won't thrive without some fertilization.
I stocked with angels, a dwarf gourami, two dwarf ciichlids, 3 otocinclus, 2 cory cats, 2 zebra danios and 2 cardinals. I plan to swap out the danios and build up to 8-10 cardinals in a school, but may be a little overstocked already.
Angels get around 7 inches tall. IMO a 24g tank isn't big enough. I'm not sure the dimensions of the Aquapod, but I don't believe it is large enough to house angels. Juvenile angels would be fine in the tank for a short time, but they'll eventually need to be moved before they are stunted. Cories, danios, and cardinals are fish that need groups. Swapping out the Danios is a great idea because they can be pretty nippy, so i wouldn't keep them with angels. You may be fine to keep one angel, 10 Cardinals, the cories (add atleast 4 more), the dwarf cichlids, the otos, and the gourami. But IMO that would be a stocked tank.
Ok, now on to the original poster.
If the tank indeed has 65 watts of light, you have alot of options. I'd stick with medium and low light plants. You may want to add some DIY CO2.
For substrate, Eco Complete is an excellent choice. Its by far my favorite plant substrate. You can always use regular gravel though, if you don't want to spend the money on Eco. Depending on the dimensions of the tank, you'll need 1 or 2 bags.
I'll be looking for some relativly durable plants to put in there, and preferably not ones that require complex care.
I'd look for Anubias, Java fern (both of which should be attached to wood or rocks), Wisteria, Ambulia, Rotala rotundifolia (sometimes mislabelled indica), Bacopa caroliniana, Moneywort, Alternanthera, Dwarf Sagittaria (foreground, grassy plant), Cabomba, and there are many more.

The ones listed between java fern and dwarf sag are all stem plants. They will grow as tall as you let them. I give mine a trim usually at water changes or every other water change (either weekly or bi-weekly). You will need to use some sort of fertilizer with the lighting you have and those plants. Since the tank isn't that large, the Flourish liquid fertilizer line will work. I'd use Excel, Flourish comprehensive, potassium, and possibly nitrogen and phosphorus (depending on the amount already in your tank water). If that sounds like too much, then you could use dry fertilizers that you buy in bulk from
http://www.gregwatson.com. They are pretty cheap and last a while. You'll just have to figure out how much to use.
Hopefully this post isn't too overwhelming. I know when you are just starting out you take in so much information that it all kind of runs together. Plants may seem hard to keep, but really they aren't.

You just have to get used to everything. You can trim and fertilize after weekly water changes and get everything done on the same day. DIY CO2 is easy to setup and lasts around 2-3 weeks before you need to change out a bottle.
For stocking, I'd go with:
1 large school of fish (tetras or rasboras) of 10-12 or 2 medium schools of 6
1 medium sized gourami (Pearl, Gold, Blue, 3-spot)
6-8 Cories
4 Otocinclus
pair of Dwarf Cichlids (Rams, Apistos, or Kribs)