Can't remember the exact details of spring weights across the different chamberings and slide lengths, but you will generally get big benefits by trying to find a flat-wire recoil spring. Normal piano-wire recoil springs for 1911s in .45 get you about 3000 rounds before needing to be replaced, 5000 on the high side. Flat-wire ones seem to go at least 3x that, if not more.
This would be my first choice for a traditional spring setup:
https://wilsoncombat.com/recoil-spring-kit-flat-wire-45-acp-full-size-17lb.html
Another option to consider is
Sprinco's guide-rod system, which uses both the normal recoil spring and a heavy buffer-spring right at the very back of slide travel. The smack of the metal-on-metal with the slide whacking the frame is reduced quite a bit, but that energy also goes more into the buffer spring and is used to fling the slide forward again, rather than being wasted right into the frame and your hand. Longevity of the gun and the reliability of individual cycles increases. Only thing I'd ask in addition would be to have the recoil spring be a flat-wire one.
Regarding slide velocity and ejection patterns, it may be a bit on the excessive side, with 30' brass, but keep in mind a lot of what you hear about "tuning" 1911s with recoil springs is coming out of the competition world. A lot of those guys perceive things in recoil impulse that a normal shooter just wouldn't, and they're also tuning for very specific performance in very specific circumstances. They might want a heavier spring to soften up the recoil impulse, but that creates a narrower zone of reliability when the gun gets dirty and sluggish.
When a 1911 recoil spring starts wearing out, you get extended brass distances, but also failures to feed - the spring starts not having enough power to strip the next loaded round off the mag, and then overcome the various friction points involved in fully chambering it.
Excessively heavy recoil springs tend to have failures to eject, often with brass getting caught up in the ejection port, or the slide not going back far enough to catch the case head on the forward stroke, or fully chamber.
All this is being shared to say that, as long as your gun isn't having any failures to feed, it may have a bit larger zone of reliability than a narrowly tuned race gun. Go a little lighter and you might have failures to feed. Go a little heavier and it might soften up the recoil a bit, but go too far and you get different reliability problems.
