Hi Kitsky. You found the right place to ask for advice!

That Hounder is a nice looking bike. $200 for a single speed will go further than $200 for bike with gears. And it has a lot of good reviews. Please invest $20 in a helmet. All cycling helmets sold in the US have to be certified so even the cheapest one will work. The more expensive ones are lighter, more comfy and better ventilated, which won't matter that much. That's the minimum you need to ride the bike. Buy other accessories as you need them. A floor pump to keep tires inflated is probably a must have. When you get a flat, you'll discover you need a patch kit and tire levers, which is cheaper than a new inner tube. If you want to fix flats on the road, you'll need a bit more: a frame pump and perhaps a seat pack to hold these items. Or you can toss them in a back pack.