Dream104,
Unfortuntely for you the Ivy season and playoffs are over. Dartmouth beat Columbia 2 out of 3 last week to earn an NCAA bid. BOF's suggestion is a good one for anyone interested in a particular team or Division. This is exactly what I did this past Spring. I saw Dartmouth play UVA and Columbia play Richmond. Of course I didn't realize these teams would win their Ivy divisions. I made my own talent assessment from those pitching performances. I shared those assessments on this forum, but I expect everyone to make up their own minds if they seem them live.
Most college pitching staffs will have "movement" and "power" pitchers. What you are describing above (in mph) fits that bill in my mind. You'll have some throwing mid 80s all the way to low 90s. Ivy walkons and transfers will be the exceptions to the rule due to the academic programs. I know my son's future team is graduating 8 seniors and they've recruited/enrolled 8 players for the incoming freshman class.
In my mind, the Ivy Conference is the mid to lower tier of D1 baseball. If you look at the College Baseball RPI or SOS for the Ivy schools you will notice they are in those bands of baseball teams.
http://www.boydsworld.com/baseball/You also need to remember that the Ivy recruiting universe is not like Univ Texas or Univ of Florida where everybody wants to play there and is a stud athlete. As an EXAMPLE, the Ivy recruiting universe is top 5% of class, 2000 SATs combined, 3.7 GPA, teacher recommendations, and some "hook". "Hook" is a unique talent, skill or aptitude that seperates them from other students. In addition, they have to compete athletically at the mid to lower D1 level, and stay in school.
Any team is going to have a distribution of talent, and the Ivys will be no exception. You have 28-30 players and 9 positions in the lineup. Competition for each position is tough just like any college team. You must perform to play.
If your son is being recruited by any D1/D2/D3/JUCO school, you should have an idea of where he fits at the various levels as well as the school he is interested in. Good luck!