I have used various pumps and pods over the years. Yes they all do the same, differently.
Insulin is the key. These closed loop types are designed effectively around certain insulins.
Contact the manufacturer and ask about recommended insulin for your system. Your therapist should be able to...
That's a lot of injections per day. You may want to consider 6mm needles for your pens. I had similar after years of injecting. Thing was my absorption rates were affected hence high blood sugars. If you have been injecting for a long time and your sugars are all over the place you may need a pump.