Welcome to WF Ben! You'll find plenty of helpful people here. It's good you're giving some thought to your first plane. Let me give you my 2 cents.
Your simulator time, being video games, may be hurtful, not helpful. Depends what video games you were playing. The arcade style ones 'simulate' flying, ummm, I can't think of a good analogy. Many of them don't simulate flying. The best I've seen lately is Wings of Steel, but even that is bit of a stretch. Microsoft Flight Simulator and X-Plane are ones I've done in the past. There are some cheap, or even free RC sims out there, they can be helpful with learning orientation and training your fingers, etc.
As far as your aircraft choices, your links aren't working, but I can tell you right now, the Bixler is the better choice, hands down. No really scale plane, as I assume that Cessna on E-Bay is like, is a good choice for a first plane. Search the beginner forums. See what people are really talking about and interested in. There's a reason some planes are popular starters.
Planes like the Bixler, (I think a Multiplex Easystar clone), HobbyZone SuperCub or Champ, Firebird Stratos, Ares Gamma, etc., are some of the popular favorites. That Cessna you found probably doesn't have the best flying qualities for a beginner. More importantly, what spare parts are available for it? More than likely, unless you're a born natural or if you have an experienced person to help and train you(do you?), you'll have some kind of mishap while learning, and if there are no spare parts available, then what? Buy a whole new plane?
If you have a LHS (Local Hobby Shop) nearby, the best thing to do is see what trainers, what spare parts they carry, and how much they cost. You may also want to search for a club nearby. They can give advice, and might even have a designated trainer, as well as a trainer plane for you to get started learning. You can search here for AMA clubs:
AMA Club Search
Good luck and let us know how it goes!