Sounds like you are slanted towards one position only. Remember this isn't your house. If someone was advising me, I'd want to hear the pros and cons and then make the decision myself. I think bob deserves the same respect. Don't sacrifice your future business/designing credibility. After all pine isn't perfect and beauty is in the eye of the beholder. I'd say cover it with carpet or put an solid oak hardwood floor down. Do a search on the word pergo on this site to see the pros/cons of it.