Exegetical safeguards?

In my previous post, I gave a "principled" reading of Acts 8. To further demonstrate my growing skepticism of how we (very broadly of course, and mostly envangelicals) tend to use Scripture, I decided to "show my work." How could one, using all the helpful tools one learned in Hermeneutics and Sunday School, support the sort reading I presented yesterday? Easy, as it turns out, lets go point by point:
1. A quick look at background cultural sources will immediately tell us that Simon's "career" was being a magician. In his culture this was not a disrepected line of work, maybe on par with a TV weatherman. Likewise it is appropriate to say that Phillip's primary employment was as an Apostle (cf. Acts 6:2-4). A close reading of this text certainly demonstrates that both Simon and Phillip are good at their jobs.
2. Again a simply cursory reading of this text demonstrates that Phillip was better at being an Apostle than Simon was at being a magician. This discrepancy causes Simon to "seek out" Christianity. That this is effective is demonstrated by the end of the passage, also note the large number of miracles performed by Jesus, and the other Apostles in Acts.
3. The praised heaped upon Phillip in this text is not a stumbling block, but rather serves God's overall purpose of evangelism. Again, compare the noteworthiness of Phillip with the other Apostles (particularly Peter and later Paul). Also, note the repeated references to Jesus' fame and reknown spreading throughout the gospels.
4. When we look closely at this passage, we discover that as in point 2, God uses our gifts to reach out to the world. Phillip was gifted to be an Apostle (1 Cor. 12:28-29) and he lived into these gifts, whereby God used him for great things. Likewise, we must live into the areas God has gifted us, and one of these areas is our occupations.
5. This passage along with 2 Corinthians 6:14 give very clear guidance that Christians should work with, play with, and particular hire those who are Christians, or at the very least are "seeking."

Clearly when this passage is read in the light of the rest of the New Testament, held against the background of 1st Century Near Eastern culture and only lastly considering our contemporary circumstance, we understand the obvious principles intended by Luke and the Holy Spirit for our lives today.