hey good luck to your "career change".
i have also done both.
i thought having an er background would help me in the icu.
NOPE i was wrong.
Each has pros and cons.
You have to change the way you think and perform in the er, vs the icu.
er is really fast paced. you have to be able to do things quickly, from starting an iv, to discharging a pt ( there is always somebody waiting for that bed)
in the icu, if you do things too quickly mistakes will be made
ie hanging dopamine instead of dobutamine. oops.
i think whatever road you choose you will love!
your telemetry experience will be a total bonus to whichever department you go to.