Moving to a smaller firm?

so, I currently work for a F10 Tech firm..think in the line of IBM, Dell, HP..
My role as a finance analyst is mainly to support controllership as well as the FP&A team. Most time is spent doing journal entries, variance analysis, balance sheet recons and such. I HATE IT!! Pay is terrible, no incentives to perform, and barley any recognition. Basically, you are like a small bolt inside of a car.

A smaller firm ($10B in revenue) is very interested to fly me in for an interview for a treasury role. I was told by the hiring manager that the team is VERY lean, and management style and culture is 'changing'

I want to know if going through the whole interview process (taking days off, flying in, etc.) is worth it? I am sure if i focus, the offer shouldn't be too hard to get, given my background. I am interested in treasury, but don't know about moving from a huge well-known tech firm to a smaller firm in a diff sector would be a good career move? My long term goal is to stick in finance rather than accounting (was an accounting major), so tht part is figured out. what i want to know is how would this translate to B school apps? and moving from a brand name blue-chip to a relatively unknown PE portfolio comp?

just to add, i have been at my current role for over a year..and i don't plan on staying much longer. if i do 2 years, i'd consider myself extremely patient to deal with the crap tht goes on in this company.