Until you have the exhibit tying down "G" to a exact location, signed by both parties, you really don't have a lease. The land owner could always refuse any location you throw out, and the lease is effectively killed. Item F should be a non-issue once you have an accurate exhibit for G -- how can the landowner agree to a location without assuring you it fits his criteria for the parking space? I would have a sentence on the exhibit acknowledging that in that location, item F has been satisfied.
It always worries me when the landowner wants to tie down the location with such precision. Be sure and put the word "approximately" in front of all measurements showing where the sign will be. Remember that building the sign is an imperfect science, and it is not uncommon for the sign to be many inches off the target when the reality of drilling the hole, positioning the column and pouring the cement are taking into account. You don't want the landowner trying to terminate your lease because you are two inches too close to the side property line.
The other provisions look pretty standard.