Another vote here for Paleo/primal recipes although I know you say "grain free is not for me" I think it's worth looking at a couple of Paleo/primal blogs... Plenty of family recipes and no need to actually buy the books unless you really want to.
It really is easier to cook different things rather than gf versions which are never going to taste or feel the same iykwim
If you look at Marks Daily Apple blog, and Robbwolf.com Paleo solution blog, there are lots of recipes and links to other sites with recipes. The great thing is, EVERYTHING on these sites is GF, so no faffing about trying to substitute... All of the recipes will be suitable. And if your ibs is improving on gf, but hasn't resolved totally, there is a fairly good chance you will get further improvements from going grain free (lots of people cross react to one or more other grains, it may be substances other than gluten that's causing you issues).
Grains are not actually a very nutrient dense source of calories - fat is much better! By fat, I mean natural animal fats (what comes attached to the meat, in the eggs, butter, virgin olive and coconut oils... Not industrially processed fats (seed oils, margarines etc).
The trouble with a lot of gf cook books, is the recipes are often even more sugar/carb laden than the "real" version!