Onhwy61 makes the point elegantly and succinctly - the issue here is not capability but reliability...
a reliable connection that sounds like crap is as worthless as a unreliable one that sounds great.
Unfortunately there are no definites here. I have been using a wireless connection in many scenarios with absolutely no reliability problems. Evidently some have had problems. At this point you have many opinions but the only way to know for sure is to try it. An Airport Express is only $100 and you can get most of that back on eBay if you find it doesn't meet your needs. That is the cheapest first stab at the problem.