That sounds a tad extreme to myself to be honest. That being said, I prefer strings with a slightly higher tension so I can dig in more. I'd suggest maybe getting solo strings (These are tuned F#,B,E,A) and tuning them down a tone to concert pitch. I had this setup on an EUB I got from another BCer and it was like butter to play. It would probably also be easier / cheaper than buying a full set of strings and an extra C.
Also, I'm not sure what you intend to get out of playing upright bass, but you might not want to make your tension too low if you plan to ever play at any jams/situations where you're playing a different bass. It could make transitioning very difficult, and I know a lot of guys who have gotten 'owned' playing a bass at a jam session as the tension/action was too high (Myself included!)