I would try this install with no amplifier... At the highest UHF frequencies RG-6 should not have more than 6 dB loss per 100'.
If you prove the need for an amp (Verify a good signal at the antenna, then check at the end of the coax run);
You have fairly strong local signals so even though the ideal location for an amplifier is at the antenna, you have plenty of flexibility.
If you are going to use factory built cables, use a 50' cable from the antenna to a Channel Master CM-3410 (presuming the CM-3410 can be located out of the weather). Then use a 100' cable from the output of the amplifier to TV or splitter. If no power is convenient, you can use a power inserter located near the TV
http://www.channelmasterstore.com/An..._p/cm-3410.htm
http://www.channelmasterstore.com/Am...p/pctmpi1g.htm