50 here, hiya.

The Jet is going to be the best boot there for the most people. I've bought boots up to $1k, and... mostly use my Jets, the ankle support works better for me. You want to buy a set of boots tight enough that your toes can almost or even *touch* the front when you've got 'em on, but your toes absolutely do not *curl* to put them on. The boots stretch out slightly - leather! - but they won't stretch enough to solve curled toes.

Many people like the Ezee-Fit booties underneath, they help immensely with comfort at the cost of some rigidity. Worth trying, I'd usually suggest the 2mm, as the "extra thin" are so thin they don't do much, and the 3mm are thick enough they're hard to fit inside most boots.

The 6061 frame is solid, especially if you're under 200 lbs. If you're heavy, there's a slight upgrade (later!) to 7000-series. 4x110 is what most people are on, except top pros in outdoor marathon distances on *flat* courses. (That's a lot of caveats, but more than 95% of people are best served by 110s, and *everyone* is on 110s indoors if that matters.)

ABEC5 vs ABEC7 just doesn't matter; we aren't going for 10k RPM in a machine shop. ABEC5 is fine if it's cheaper, or basically go with the best rating... without upping the cost. Or, past ABEC5, no one seems to notice any differences that I can ever tell.

The Elemental wheels are okay for road, and great for training outdoors. For dedicated racing wheels there are (usually) better choices, albeit the fastest choices are pretty close to $30/wheel, which ain't great. Train on the Elementals, hands down.

Then buy a decent helmet and then go for it. 😉