First off, there are no dream schools - there are many schools, many like schools and there are ones out there for you.
First affordability and then find schools you like or schools like them.
CU Boulder and PSU have similarities. But not really any, at least environmentally, compared to BU or BC which are not alike themselves.
All of these are expensive - so do you have a budget, etc.
As for BU, I wouldn’t say out of reach - but unlikely unless you ED.
I’ll say this - if you don’t apply, then you can’t get in.
You have 20 Common App slots - so you can use them. You can only go to one school - so if one rejects you, so be it.
Schools similar to BU - removing NYU as it’s equal in difficulty, GW would be easier - others than could sort of fit in as similar in that they are urban - Pitt, VCU, and Minnesota. I don’t know your major but these are likely.
I’d say PSU and CU are also likely - but it depends on major. For example you might get into CU but not engineering or business if those were your interest. An Alabama would be a safety in similar vein.
As for BC - perhaps other jesuit colleges - maybe a St. Louis or Creighton, etc.
A lot will depend on your major…and budget.
But you’ll have lots of colleges out there who will want you.
Good luck.