I have been in LTC for 3 years at 2 different facilities. From my observations and experience they are not good places to work and things seem to get worse, not better. I'm sure it has to do with money and facilities getting less, having to wait longer to get it and more paperwork and rules and regulations. Your questions and my experience:
#1 I worked a double shift on Thanksgiving because there was no one to relieve me. Oh, management knew but chose to ignore it. All my emergency numbers--on call nurse, DON, ED where switched to voice mail that didn't get checked. You are usually on your own to find a replacement for a call-in.
#2 Acuity changes with discharges and admits. Also what unit. Medicare can get tough and hectic eating up a large portion of time making it difficult to attend to your other duties. IVs, tube feedings, trachs, dressing changes, etc. BTW, the 24 res you will be taking care of, are you sure they just don't have low census now and the unit has room for 30 that you will have to take care of when it fills up?
#3 I've found CNA coverage to vary from day to day. They are usually pretty stretched out and again, if there is a call in it may be up to you to find coverage. Also, when the facility has to start cutting expenses because of low census, the hard and usually overworked CNA is the first place they take the knife. Most facilities do not have a full staff of CNAs and will take any "body" if need be. These CNAs are not much help.
#4 I got 2 days of orientation at my present job. You will know who to ask for help. Those that know anything will stand out. The rest that pretend to know things are obvious.
#5 You and any LPNs will likely be doing the same work. If you are equating being the person to oversee a staff (LPN) or for that matter (CNA) you may be mistaken. You mention a med tech on one side. Maybe this means on another unit. You of course will oversee the CNAs, but if they are any good they will not have to be told what to do and will report any problems to you. You will come to appreciated a hard working, on the ball CNA as a gift from heaven. But as the RN you have the ultimate responsibility. This is a whole different situation than a hospital.
#6 A ward clerk if you are lucky enough to have one. Ours died so they decided to save the $9.00 and hour and have the nurses do it instead of hiring another. Oh, we also have to answer the phone by the 3rd ring. (Not anything you asked, but when someone calls for a resident and we transfer the call, if the resident doesn't answer, the caller will call back and tell us there was no answer and they will try again later or request you go track them down!?)
#7 That varies with each facility. The last one I worked at was terrible for supplies. Each cath res got one new bag a month. If it started leaking it was up to the nurse to figure out how to patch it. We had 2 sizes of 18 gauge needles that afixed to non luer lock syringes. The supplies were locked up at night and on weekends so if you needed say a diabetic syringe you went begging to another nurse. It didn't make sense and didn't have to. When you complained they looked at you like what's the problem?
All is not lost if you take the job and don't like it. You can always go elsewhere.