58 cm might be a little small for you, have you had bikes that size before? (You're doing this to be more comfortable, after all.)
Not sure what your commute is like but thumb shifters with a drop bar doesn't sound like a lot of fun to ride on every day. (The next bike up in their entry line has STI shifters with a drop bar.)
Triple chainrings seems like overkill too but I don't know about where you commute or what the rear cogs are like.
I'm really new to cycling, so some of these questions are probably dumb.
Size wise I was just looking at the biggest size they offered. I did notice that they offered STI shifters on the next level up, and those look like they'd be much more comfortable.
As far as my commute, it's only around 5 miles a day, but I like to get multiple long rides in per week. Right now that's been hindered since rides in my current seating position get uncomfortable quick.
The exceeding gearing would be overkill for me. I really only use 4th, 5th, and 6th. And I usually stay in 6th. I was looking a single speed before, but I think I'd get tired of that quickly.
Do you know of any other low end brands I could look at besides the Vilano's?
edit: based on a bike calculator my ideal frame size would be 61" (6'5, 35" leg length), so yeah that frame might be a bit small for me. I think my current Fuji frame is 57cm.