Hi,
I'm pretty sure I've already welcomed you to the forum, so I'll just say "Howdy" and offer you a few thoughts from this old noob.
I get the attraction of aftermarket parts. I have replaced a recoil spring to "smooth out" the action on one of my 1911s. I've replaced another stock guide rod and recoil spring with a captured system because it made the gun easier to maintain. I dig that you can add a little color to a scary black pistol. It's all fun and can be advantageous.
A guide rod that screws together to capture the recoil spring concerns me just a little. I would want to check that aparatus every time I cleaned the gun just to make sure it's not coming apart. You wouldn't want that to happen at the wrong time on an EDC unit.
I like the idea of a full length guide rod to keep a spring from binding, add a little heft to the unit, and lessen the recoil and muzzle flip a little. I like the idea of replacing a polymer guide rod with a solid metal piece. But like
@NMEDGE and
@Annihilator, I want to shoot the "new" off of a gun before I start making any changes. That way you start with a known, good baseline. Then change one part at a time, test further. Everything OK? Change another part and make sure everything is functional. Test again.
I have an Echelon 4.5F Comp. The only thing I've done to it so far is add a Holosun optic. I'll probably put another 200-300 rounds through it before I make any more changes. I have another Echelon 5.28" Threaded barrel on the way. I'll probably end up replacing the polymer guide rods in both, but not until they are quite broken in. I'm thinking I'd like to use these for competition and it might help my meager skills. But probably not. There's no help for me.
I like NDZ's color choices. The Apex seems solid. Rook is very fancy with their logos on the end caps. I think I'd be happy with any of those. A magwell addition might be advantageous in competition. Is it really necessay for an EDC self-defense unit? You decide. A brightly colored panel on the back of the slide might get a few "oohs and aahs" at the range. A little cosmetic enhancement might be fun. But again, is it a range toy or a "working" EDC pistol?
I'm fairly practical, but I like to have a little fun too. Just consider upgrades carefully. Are they functional or just for show? You certainly don't want to do anything to affect reliability. Be sure to test thoroughly.
OK. Wow. That was a lot of words just to say, "Do what you want, but be careful."

Let us know what you end up with.
Thank you for your indulgence,
BassCliff