That would be quite a significant pay cut. For me, that would be a very hard choice. However if floor nursing will ultimately render you disabled otherwise then it might be worth it.
I think all work environments are different. I have my own office but keep the door open between calls to chat with the other nurses. I wear casual clothes when working nights and evenings. It's just us nurses - no management or administration so we like to get comfy. Personally, I absolutely LOVE my job. Patients appreciate the comfort and advice you give. Sometimes I work 56 hours a week. I don't feel my job is stressful so I have no problem coming in for extra hours. I feel like Telephone Triage, in the right circumstances, can be a sanctuary for the weary and burnt out nurse. You might really enjoy it.
That being said, why such a large pay cut? Would you moving to another area for the job?