I'm working at dropping cable. 
 
Here is my tv signal results link
http://www.tvfool.com/?option=com_wr...0b863fc08f6514
I have 3 TV's on 2 different floors.  My best plan so far is to mount an antenna in the attic (asphalt shingles).  The homeowners association here does not allow outside antennas.  I'll run a RG59 coax cable from the antenna down to the basement where I'll hook into the existing coax which was used for cable tv.  The coax splits into 4 rooms.   I will be completely disconnecting from cable service.
I like this antenna and plan on purchasing it unless advised otherwise: RCA ANT751R Outdoor Antenna.  I can't find any info as to whether is directional or multi-directional, but it got really high reviews on Amazon and it's inexpensive.  
From my map it appears I have signals coming from 2 different directions.  Will I need two antennas?
Does anyone see problems with this?  Am I missing something?  Is there a better way to do this.  Will I need a signal amp?
Thanks so much in advance!
Greg