but it is a long keyword (3 words, 20 characters), and having it without hyphens seems not attractive ... and maybe G will hate it, or not ?
Google will not hate it, but it will not carry any extra value like an EMD does and less than Partial because of the extra hyphen character(s). It also depends on competitor domain names.
Personally I use "SummerGasGrills.com" most of the time to avoid long and ugly domain names when EMD is not available, people overestimate the value that comes from EMD.