Similar to what others have said, I would take the more economical option - VT.  They're still a great school and with a great price tag.  Yes you want the experience of college, but you also don't want to come out of it with a huge debt that is so burdensome that you can't pursue your interests or future education.  After undergrad, you may want to get a masters in architecture (very common, required in many states) so you want to be in a good financial position to be able to do that without making yourself live like a student for the rest of your life.  If you do decide to continue your education, you'll have the opportunity to go abroad then, continue at VT or just go to another school.  

Another thing to consider is, although you are dead set on architecture now, you may get to school and decide you'd rather pursue a different major.  At a school like VT, that presumably excels in many areas, you'll be in a great position to change your mind if you want without risking your financial future.

its a wise decision to invest money on your masters degree and try to save money on the undergrad. 

In Virginia, most every firm around is going to have Tech grads.  Stop by a firm and see if anyone would be willing to talk to you about their school experience.  I've yet to run into a firm that didn't have someone willing to talk to people like you.  When you say you're close to Blacksburg, how far are you talking? 

If you plan to practice in the US, then the B.Arch at Virginia Tech seems to be the most prudent route. Student loan debt is burden you want to minimize as much as possible. Look to see if there are study abroad opportunities as part of the architecture program, that way you could still have some of that diversified experience.