...in my opinion money won’t buy you a successful reef.
Sure it will. Just hire a successful reefkeeper to build and maintain your system
There's lots of toys available, and lots of really, really good equipment that you simply couldn't get a decade or two back. Take advantage of those advances, it can really help increase your odds of being successful...
but...
There ain't no corals you can keep that you can't keep under T5's... you don't really _need_ those high dollar LED's.
A conscientious, knowledgeable, and attentive reefkeeper is a far more valuable component for a successful reef than any fancy gizmo you can purchase. You spend the time, gain the knowledge, pay attention, and your chances of success go up dramatically.
The overall success rate of this hobby being what it is, there is a plethora of available, high quality used gear out there. Personally, I don't do used tanks... to high a risk for too little savings, but lighting? Electronics? Pumps? Reactors? RO/DI systems? You can save a BUNDLE by going with good used gear.
That $5 brown acro frag at the LFS might just turn into a beautiful butterfly, given good water quality, good lighting, good flow patterns... No need to buy expensive frags, a tank full of mature, healthy, but dead common corals can be beautiful.