I have been a tech for quite a while, and I can tell you that what you have the opportunity to learn while being a tech is priceless. Especially in the float pool. One of the biggest advantages of the float pool is that you don't have to get involved in the politics of the floor. I have found nursing school
to be a piece of cake (so far) because they haven't covered a condition, or situation that I haven't seen before. And, if things really suck, you can just work per diem.
Another thing to consider, I talked to a recruiter and she said that they only hire new grads into the CCU/ICU if they have had prior experience as a tech in the CCU/ICU. Even with a nursing shortage. The other hospitals will hire anybody, but for the best one's in town, they want some kind of experience.
Maybe you could work there a while and then find a better job after you have gained tech experience??