@alexschoI would suggest a UW to fill the gap between the PW and SW.
If you're a high handicap, I'm not sure you need a 58 degree wedge. Your priority on short game shots isn't "get it close" (but that's great if you can), but rather "get the ball on the green; within spots on the green, priority is to spots close to the hole." But I wouldn't just now use a club that many high handicappers usage tends to risk leaving themselves with yet another short game shot.
Good luck. Make sure you know the rules, of course; people can and do get casual with the rules during non-tournament play. Make sure you know what local rules are in effect, too; you don't want to Jerry Rice yourself out of a tournament if, for example, laser range finders aren't allowed but you use one.
Day 151. Tournament at my home course today. I shot an 87 with 4 GIR and 7 near-GIR. Now that I write that out, I feel my long game was better than that stat line today, but I guess not. I did some full swing practice before the round, outdoors at the range, checking my backswing length as per my past month or so of work.
Secured a par at my home course's hole #17 today. I am not happy with how long it took me to get better than bogey on it. I hit a poor tee shot, a good recovery punch shot, then a sweeping hook 6-iron to the green. I correctly read that the lie and setup would hook, aimed well left of the green, and swung. Big hook, ended on the left side of the green, 15' from the pin, and I darn near made the birdie putt too.
Speaking of which, I gave a par at #s 7 and 9 a good run today too. Still no birdies at my home course this year! 😞