There is typically some signal loss when using attic antennas, but it can often be somewhat compensated for by using larger, higher-gain antennas. As long as you don't have significant metal in your attic that would disrupt signals, such as significant aluminum siding, metal roof (as opposed to typical plywood/asphalt shingle construction), foil insulation or significant metal ductwork, you can usually do pretty well with attic antennas.
For your situation, it depends on what you wish to receive. You have 5 stations providing 5 major networks at 72-75 degrees true, all between 9-12 miles. These stations are on VHF-high (real channels 7, 11 and 13) and UHF (real channels 36 and 47). For these, something small like a Winegard HD7694P aimed at 73-ish degrees would receive these just fine. Since the beamwidth of this antenna would be fairly wide, you might also expect to receive KCSD-24 (PBS) from 35 degrees true, especially if you cheated a bit and aimed the antenna around 50-ish degrees true. KSMN-15 (PBS) is perhaps strong enough to be received from your attic with the HD7694P, especially if aimed directly at 53 degrees true (close call). If KSMN-15 is very important, perhaps you would upgrade the selection a bit, just to make sure. You could first try using a simple 4 or 8-way unpowered splitter (terminated at any unused ports) to see if you didn't lose too much signal strength at each tv, but ultimately, you might need a powered distribution amplifier at some convenient location down in the house to ensure good signal strengths at all 4 or 5 tv's.
You can probably receive additional stations from your attic, but they are in different directions and/or farther away. When feeding multiple tv's, having to rotate antennas or switch between multiple antennas can be inconvenient. Clicking on the "Pending applications included" on your TVFool report finds that KWSF-17 and KUSD-34 (PBS) are also available, but they are each literally at right angles to your other stations, making reception possibly unreliable. If you wanted these two additional stations (reliably), one option is to add a 4-bay UHF-only antenna (either homemade or bought), but remove (or don't install) the rear reflector portion, making the antenna bi-directional from the front and back (albeit at reduced gain, but those two stations are plenty strong). You'd aim that UHF antenna toward those two stations (front and back), but then you'd have to use a separate coax downlead from your attic to an A-B switch at your tv, and you plan to use multiple tv's (which might be somewhat problematic).
If you are also interested in receiving the 5 stations from 156-161 degrees true (at 66-70 miles), it might be possible from the attic with long-range antennas, but again, it's a close call. The antennas to do that would be an Antennas Direct DB8 UHF antenna mounted 2-3 feet above an Antennacraft Y10-7-13 VHF-high antenna on the same mast (mounted as high as possible). You could have these antennas on a rotator and forget about the HD7694P and the separate UHF antenna for KWSF-17 and KUSD-34, or you could have them as a separate setup and feed a separate downlead to an A-B or A-B-C switch at your tv. You'd combine the DB8 and Y10-7-13 using a special UVSJ combiner with two short (3 or 4-foot) coax lengths, with a single coax out from the UVSJ. If the DB8 plus Y10-7-13 could not receive those 66-70-mile stations from your attic, they almost certainly would from the rooftop/chimney.
Hope this is helpful - good luck !