We have three hybrids - including a FX 7.5

recommend 32mm min size for your / a hybrid - even for all road riding

with the larger sizes (especially 35mm and larger) the bike will be more versatile - and the ride and handling especially on compromised road surfaces should be improved

if not riding in areas where flats are too common - consider a tire that rolls and rides better (than a Gatorskin)

for reference - attached pics of two bikes equipped with 28mm and 32mm Continental GP4S