I applied to the second school because I'm interested in working with two specific faculty members. I do not love the location of this university, which is why I asked whether it was worth it to visit after hearing from my top choice.
Regarding the offer of admission, the director of the program made the offer, but the offer was not accompanied by a stipend amount or any financial information. The director also used the conditional (i.e. "your file is currently being processed...an official letter should arrive...we would need to hear from you by April"), which concerned me. Once I accepted, the director switched to the definitive (i.e., "we are very excited that you will be joining us"), but there was no financial clarification. I was informed that the letter will arrive anywhere in the next 1 to 3 weeks. The interview at the second school falls within this timeline, but I want to be considerate of their time if I am in fact financially secure at my top choice.