A good pump trainer will help fill in the gaps for you. Whatever questions you still have, just ask us!
I have the minimed 722 and the continous glucose monitor. I wear the glucose monitor sporadically, as the sensors are not covered by my insurance plan. I have it in case I get pregnant, in which case I’d wear it all the time and pay out of pocket if necessary.
I would get used to the pump before starting with the CGMS. It takes a while to adjust your basal rates and there is a slight learning curve (at least for me there was). The pump is not that big, and trust me, you will often forget that it’s there. I, too, had similar concerns and they were all put to rest once I got it. To sleep, you can put the pump right next to you on the bed or in a pocket, and as for intimacy, you can either disconnect it for a while or choose to keep it on. It very quickly becomes a part of you!