Promotion Opportunity in Mclean, VA. Need some advice.

[BleedBurgundy]

Ok, I just was informed that I'll be getting a call from one of my higher ups later today offering me a job in McLean, VA (our corporate HQ). The position is similar to the one I hold now as IT Admin but with much higher visibility. I have some questions about the area and I'm hoping someone on here can offer some advice.

1) I make 75k now, this position would pay 80-90k. Moving from Lancaster, PA down to the greater DC area... will that bump make up for the increase in cost of living? Around here, 75k is a decent salary for someone in their 20's. Not sure about that area.

2) Housing. If I take the position, it's probably going to be with the understanding that it will lead to something else in the next couple of years. I currently own my home, but I think I'd be looking for an apartment, at least at first. Any good areas to look for (either renting or purchasing) that are not too terrible of a commute?

3) Wife is also in IT. How is the market in the area for the field?

Anyway, those are the big questions... Any help you guys can lend is appreciated.