I haven't felt that way about golf yet. However, I can relate as I had that same issue with tennis.
I was a scholarship tennis player and tennis instructor. I got so competitive that winning wasn't that much fun due to pressure and when I did lose a match it was awful. It always felt like a high pressure job after I graduated high school.
Then I discovered golf playing Tiger Woods video game. This wonderful sport is only as competitive as you want to make it. You can play higher pressure stroke play events and betting games with other players, or choose the low stress route of "playing against the course" and playing in scrambles only.
No matter how low my handicap gets I will never play another stroke play event. The last one I played in I shot 3 rounds in the low 80's and lost to a guy that couldn't break 90 due to his "handicap." I said to hell with that...and I've stuck to scrambles and playing the course ever since.
The 3h seems like a waste of a slot (distance-wise). If it was me, I'd ditch that one in favor of something that I could hit 205 to better fill the gap between the 3i and the driver, and get another wedge for around the green as well.
There are times where I feel like a bit of an oddity within the TST community, because I'm not actively working on making swing changes. I do try to spend one short range session reinforcing basics like alignment and tempo and proper sequencing, but my course time is all about just playing. For me, I enjoy the competition and the company of my friends, even when I play poorly. Sure, I have more fun when I play well, but I never have a bad time at the golf course. The biggest part of my enjoyment comes from time with my friends, good golf is just a sideshow. Think of the time invested. If you take 100 shots, and concentrate an entire 30 seconds on each one, that's still less than an hour. 3/4 of your time on the golf course, maybe more, is spent NOT hitting shots, enjoy that part of it.
OK, I accept that you're going to continue playing as deep into the fall as you can, but you want to somehow improve your enjoyment. What else can you change? Can you play with different people? Should you temporarily curtail your swing practice, and just play? Can you somehow change your mental approach to take pressure to perform off?
It seems like you feel its your duty to continue playing, because the season will end before long, rather than playing because you look forward to it. I have a duty to go to work, to earn my paycheck, but I play golf because I enjoy it. To continue doing the same thing, and continue to not enjoy the time, seems pretty counterproductive to me. So what if you take a couple of weeks off in the middle of golf season, that seems like a better choice to me than going out there and having a bad time.
Understood; bag makeup is all about personal preference, if something doesn't work for you there's no sense giving it a slot.
I would still recommend trying out a third wedge, like a 54. Yes it's close, but that allows for a difference in bounce which is important for different lies, and also in sole grind which allows other options. You might, for instance, pick a 54 with a grind that allows you to open the clubface, allowing lob and flop shots similar to what you could do with a 60* or higher. Voila, 4 wedges (including PW) just effectively became 5, adding two more weapons to your greenside game.
If you don't think playing the open flop shot is in the cards for you, consider a low- to mid-bounce 60*, again giving you additional approach options you don't have now. In this case it would be the ability to hit your normal full swing as close as 40-60 yards, and to pitch instead of chip from rough with a tight pin position.
Remember that your wedges and your putter account for 2/3 of your strokes, so making the right shot up close is the best way to drop your score. The more options you have inside 80 yards that you are confident in, the better the outcome.