I moved to Pflugerville a little over 3 years ago. While I can't speak for Austin, I can second Noe's response about housing costs north of Austin. I keep an eye on housing costs in the area north of Austin, just as a habit, and 250k will buy you a very comfortable home, 4/2.5 maybe 4/3 with square footage upwards of 2500sqft. And assuming your daughter or fiancee don't have an objection to toll roads, my commute time is minimal now that they are available.
I like Cedar Park, Round Rock, and Pflugerville. However, of those areas, my impression is Pflugerville is taking a bit more of a hit economically speaking. I believe it qualifies as a "bedroom community" where somewhere close to 90% of the residents commute out of Pflugerville to work. The implication being that without any major business related tax revenue, our primary tax driver is sales tax and that's taken a big hit due to the economic down turn. To offset this revenue loss, the city officials have decided that to counter moderate property value decreases they will increase property tax rates (according to community newspaper).
There are plans in place to counter that, with large amounts of commercial/retail development in progress now along with efforts to recruit further commercial/industrial development. But I've read that the impact is 1 to 2 yrs away, at best. To add further context, I believe RR and PVille have extremely high property tax rates, with a house in the 190k range having an annual tax value of $5500. That said, I've been pleased with the school system and the community as a whole.
And to add to Jim's offer, I can also forward my agent's name if you're interested. He covers the entire Austin area, including RR and PVille.