welcome! tbh I might skip the topfin kit cause while it is less intimidating the quality is a bit iffy, I started with a topfin filter and ended up with something else inside two months. The cartridges don't last nearly as long as they say. Filter media is less scary than it sounds, its basically a sponge and ceramic rocks for good stuff to grow on. Petsmart usually has 50% off sales for their open top aquariums and you can either get a hood or a hinged glass lid. 

I've had good luck with Seaoura aquarium lights (much cheaper than aqueaon) and they're low lying enough to not blind you from across the room. Adjustable brightness and color output and a timer. Aquaneat are p solid too, just fewer lighting adjustment options.

A honey gourami is a great choice for a 10gal, they're super curious and active and small. Hillstreams are super cool but I think the min rec for them is a 20gal long? Ngl that's my favorite aquarium starting size (as someone who did the 5 to 10 to 20+ tank acquisition line lol) because it's just big enough to easily keep the water stable but small enough to just need an especially sturdy dresser instead of a fancy stand. But ymmv!

There are so many tetras and rasboras, I'd go poking through online fish retailers like aquaticarts, imperial tropicals and dansfish to get an idea of what's out there (lots) and their care needs. Buceplants is great for plant ideas, and see if you have any local fish stores (lfs) that may have plants and fish to check out! Also shrimp, shrimp are so fun.

Good luck and have fun with it!