[rickbb]

The good news is you have lots of strong signals from mostly one direction, east.

The not all that bad news is you have both low VHF and UHF and will need either a quality antenna that gets both, or separate antennas joined with a combiner for that.

Personally I'd go for the roof mount, it's almost always going to get better signal. Attic installs are trial and error, if your roof has a gable end pointed east you may get good results. If your house has foil backed insulation on the walls, roof or shingles you may not get good results.

Roof mounting is not all that hard, even with a chimney in the center. You just use those old fashioned stand offs that keep the coax/ground wire up from the shingles a few inches down the ridge line to the end of the house. then go straight down to the grounding block(s) and into the house. Usually into the craw space and then up through the floor. If varies depending on house construction.

Edit to add;

You can also do a gable end mounting and just come straight down the outside wall. The bracket for the mast will hold it out about a foot from the house to clear any overhang.