Elaine - thanks so much for all that info. Yes, the house is block and for the most part, no gutters. I was not aware not to plant within 2' of the foundation -- the previous owner certainly did. DH said those new beds are 4' wide.
I also have to look into amending the sandy soil... what would be best, a peat, manure or black dirt before I get mulch?
I do believe the AC has enough clearance, the 1 shrub that is there can be trimmed if it gets too close.
on DH I was given this link for plants... which i will spend a bit of time reviewing.
http://www.garden.bsewall.com/...
