A CM4221 or DB-4 would actually give you a better shot... they have a wider horizontal beam-width and therefor can see a wider spread of stations to the NE. (About 35° on your compass).
You should have no problem with signal strength, in fact, don't use an amplifier, just use a two or four way splitter.
You may have trouble getting an NBC affiliate, if so, add a High Band VHF like an Antennacraft Y10713
http://www.solidsignal.com/pview.asp...0Antennas&sku= aimed at WOLO CH-8 on a heading of 187° per your compass. Combing the VHF antenna with the UHF with a UVSJ like
http://www.solidsignal.com/pview.asp...Combiners&sku=
If you mount in the attic and have trouble, definitely consider moving the antennas to an outside mast. The weaker CH-8 signal would be most likely to have trouble, because it's coming over at least two hills.