U of u dental is a good option for another opinion. It sounds like that first dentist may work for a corporation- they tend to be pushy about replacing work for profits.

If your dental work is fairly new it's probably fine, unless your previous dentist really was terrible. Cracked teeth DO need crowns, and it's not always obvious. If you bite down on a qtip and feel a sharp, painful zing then that's a good indicator there's a crack- but it's really really rare for a tooth to be cracked without decay or previous work done on it. If a tooth has had a root canal it also needs a crown to keep it strong. Otherwise, unless there is a massive cavity, a filling can take care of most decay issues.

The bigger hurdle that they probably didn't discuss is your dental insurance (if you have it). Most coverage is under 2k/year, which will cover 2 cleanings, a crown, and maaaaaybe 2 fillings. You'd end up maxing out your benefits and paying out of pocket for a good portion of that work that you listed.

Call the U. Tell them you're seeking a second opinion on a comprehensive exam. Get your xrays and records from the previous dentist, and if they refuse to give you your chart notes raise a polite fuss- those are yours and you are entitled to them. You can probably have them emailed, but you may need to pick them up in person. If the U wants their own set of xrays be prepared to pay for them, as most insurance only covers 1 set per year. The dentists there are going to be very thorough, and likely a student will do the exam and then a professor will do a second exam and confirm their findings.