Upload & Sell: Off
Why have you selected the 24-120 f4? That sounds like more of a walkaround lens to me than a moneymaking lens - I know I had the 24-105L when I was shooting Canon and it just did nothing for me somehow, I much preferred primes and the 70-200L.
How much quality and sharpness do you need for the RE photography, are you shooting photos for MLS listings or do you need shots that you can blow up large and really see all the detail? Thinking that you could get the older 24-120 VR for probably $200-250 and it's really not THAT bad a lens