Mcgee Creek to Steelhead lake

mp….shhh just read im not supposed to do this, but wondering if I could get anyone's advice

I dont know the area you are hiking in but here are some general thoughts.

Bugs – what are you doing for. Assuming the heximid is just the tarp not the tent.
Stakes – Your stakes way more than your tarp. For the less important tie outs you could use lighter stakes
Sleep Pad – For your fathers gear list i would get something woth comfort in mind if he doesnt backoack regularly. A little extra weight here can greatly improve the experience
Phone an charger- do you need the charger on a 4 day trip. Is there phone coverage the whole way, is there a place to charge it.
Cook system. If you are cooking for two people on one stove a 900-1.2 l pot is nice even just for boiling water
Water system, not sure of the weight but i perfer 2 smaller bottles so if one gets. Leak as the soft bottkes do occasionally you still have a water bag. Do you really need that much volume for going to a lake?

One reason for the lack of reponses may be that ou didnt post weights. People like to see them

Location is Eastern Sierra with trailhead near Crowley Lake Elevations 8000 to 10,000 feet. This winter is mild so far. Lakes at 10,000' are often frozen in June. Normally June still has quite a few snow patches and crazy hungry Mosquitos. Bring head nets, DEET, and consider treating clothes with permethrin.

Expect overnight lows around freezing. Evenings and mornings may be quite cool. Especially as we age it becomes less comfortable to stay in bed until it warms up. I suggest a warm jacket and hat to allow your dad to enjoy the cool mornings.

Perfect your coffee making process before the trip. At your altitudes boiled "cowboy coffee" is great. (perfect temp for boiled coffee without bitterness)

EDIT: last time I was there cell phones didn't exist. I did drive down 395 a couple days ago though. I'm pretty sure you won't have cell reception at the trailhead or anywhere on your hike.