If you feel the need for starch to gain muscle then nothing wrong with it, ( potatos may not be paleo but they are an ancient food, I believe more ancient then grains and we're better evolved to eat it ) especially if you have tried honest raw paleo, which you have.
There are also many theories saying why starches can be very beneficial, and even better then glucose and of course fructose. I eat some potatoes and yams but keep it minimal, with inclusion of some fermented cabbage, fresh herbs and root salads my need for cooked starch goes to a minimal.
I am also in a similar state, that I crave both cooked and raw meat when hungry, so I just eat both at the moment, but try to concentrate on the raw part to keep it real
and more paleo.
But if you gonna eat starches stick with yams and potato, I'd stay away from any grains, and if I do have to eat grains, I go with buckwheat (I handle that the best), definitely stay away from cooked legumes wheat and gluten, most get really bad digestion from them. Remember grains are a neolithic food, I am not trying to scare you with the word lol, just saying that it likely may contribute to some problems later in life. Also I think when cooked grains are included you will loose you ability to digest cooked meat efficiently and you will also likely develop problems with dairy. I noticed with total exclusion of grains I handle dairy very well, when I eat grain, its bad, when I eat grains and dairy, really bad, get skin problems, cant digest etc. When I don't eat neo-crap, I have no problems having butter and kefir. I eat raw cheese but recently lost all craving for some reason, probably cause I put butter and cod liver oil back into my diet, I prefer the kefir over any cream or milk, its pasteurized but I can feel it has a gigantic pile of bacteria in it, its very thick and tangy, I leave it out in my room and it doesn't putrefy it gets even better. I'd stick away from getting too much lactose though, that kefir gives me a small dose of lactose, I'll eat it for 2-3 days and then I don't eat it for a week or two, I like carbs from roots, tubers and some non-sweet (or wild if I can find) fruits. The only lactose I allow to me is with the kefir - just because my body really digs whatever bacteria menagerie they put in there, I only buy that one brand too.
I don't think its a biggie if your fat isn't high...its more important its the right fat, animal fat, butter fat, fish fat - maybe coconut...I always eat the fat as part of my meat - or with eggs, or with a starch...just eating pure fat will make me disgusted too, unless its a good quality bone marrow, whats important is to not have to LITTLE fat.
Zero carb is unreal, unless you're very well adapted to it, but LOW carb is a blast! With minimal (for your lifestyle and adaption) but beneficial carbs, essential fat and animal protein, you are already near perfect diet-wise, or thats the way it feels to me.
Recently I included some clams, and I have felt totally wired up from them, guess I needed extra iron even with all the meat. If you didn't try clams give it a shot perhaps its help with exercise. I also mixed smoked clams with cod liver oil and it was nuts.
