In my experience the IQ160 is a great back and capable of delivering breathtaking images. For landscape and still life, my D800E has seen little use since I got the IQ160. There's just no comparison. Sure, I've been lusting after the IQ3 100 but that's just not in the cards for me (I used all of my get out of jail cards with my wife when I purchased my "factory refurbished" IQ160). It appears that you would be starting out with excellent lenses and a decent body that can be upgraded at some point down the line if you feel it's worth the money. Suffice it to say that a starting kit with these lenses and MFDB leaves little room for excuses when the images don't turn out as expected!
Have fun!
John
Have fun!
John