Can't resist chiming in my 2 cents.
Easy plants as mentioned are not really ANY maintenance.
Java Fern and Anubias - 0 work after getting the right spot picked out. A normal plant light is all that is required. If you have CFL tube light make sure it is a plant rated light and if it isn't then buy a new bulb, save the old one in case you ever need it. There are full spectrum plant lights. like this...
Fluorescent Aquarium Lighting: Zoo Med Ultra Sun Trichromatic Fluorescent Bulbs
Sand is great. You can also make a point to occassionally stir the substrate with a chop stick if you see any too dark spots forming.
Sand does indeed store BB (beneficial bacteria), so there is still reason to have it in your tank.
Bare bottom is reflective too and some fish freak out big time over that.
If getting sand, consider getting a pre filter sponge to attach to your intake which can help keep kicked up sand particles out of your filter.
You can add some pebbles, they offer them in smaller bags to accent the decor/scape. A rock off center and a couple chucks of DW, to and fro. People will be amazed at your tank. You can do this gradually in stages if you need to financially or because you are having a hard time deciding.
Look at an inspiration tank and try to recreate. Or look at some nature pics of river beds and streams to see how things lay out. Visit a good independent local fish store (lfs) and see what types of stones and DW they have to offer for further inspiration.
For instance you do not normally see a rounded rock sitting on top of sand. It is nestled into the sand like the sand was washed away from it. A Natural type look.
If you have a few bucks to spend, go for CaribSea SuperNaturals. There are different colors - basically a white, (hard to keep clean looking cause poop is not white), natural sandy brownish, all the way to black, other variations depending upon the type of sand you want.
https://www.caribsea.com/caribsea_super-naturals.html
This group has BB and no need to rinse AT ALL, because the liquid goes right in with it. Open and pour in. Super easy. Rinsing construction or play sand sucks.
CaribSea Instant Aquarium
https://www.caribsea.com/caribsea_instant_aquarium.html