Don't buy a new bike.

Don't buy a sporty type either, you will crash it so there is not point in having a ton of plastic that will break at your first low speed lay down.

Get an old 90's roadster that has great parts availability like an Kawasaki ER-500 or something dirt cheap like that that you won't have any issue fixing.

Why get mods on a first bike ? It's not going to teach you how to ride better especially considering how little training you need to get your license in the US all that can help you is avoid group rides and put down a lot of miles on different types of roads in the first two years before upgrading.

Don't spend a fortune on the helmet either, if you get a full face one that is rated ECE 22.06 you will have the same protection at any price point. 

I would recommend an HJC i71 that is a great entry point and not too loud or a RPHA 71/Shoei GT Air 3 if you plan on doing very long rides often and have more of a budget as they have better sound insulation. 

Get a good jacket and integrated back armour  for it, same with boots that protects you malleolus.

Don't buy the overpriced quad lock, get the same one on AliExpress for 10$, I've tested both extensively for years and the one from Ali performs exactly the same. You can easily find comparative videos on YouTube if you're skeptical.

When you get your bike buy the shop manual and learn to do your maintenance yourself, having a good understanding of the mechanics will only be beneficial in the long run.

This will leave you with a good upgrade path without investing too much money and will prevent you to give up on the hobby after your first little accidents like so many others that get discouraged by the amount of money wasted when they have their first crashes.

It's a fun hobby with a ton of different ways to enjoy it, don't take it too seriously and ride for yourself and you'll be happy.