I know how you feel. When your child gets older, and can do more things, its only gonna get worse in stuggle to use the latest technology to cope with communication with hearies/deaf. Hearing aid batteries ARE expensive esp. if you go though one battery every 3 days. Now withmy newer hearing aid after 20 years, it finally last 10 days on avg thanks to latest technology and it wasn't cheap.
A small suggestion on sign language if I may. Since your daughter is only 3 now , wouldnt it be more prudent to buy sign language books and dvd and learn as you go until she is 5 or older ? I find that using a dictionary like sign book and picking only signs i want to know and use would allow the 2 of you to use immediately ? ( i can see the wave of flamed comments coming in, but my goal is to get someone started in ASL and actually enjoy it then after interest hass taken place , then you can be sersious about it so whatever you spend would be worth every penny. You mentioned youa re in utah, have you gone to any deaf meets there ? there is a large group of deaf there and Not sure if you know this , but the headquarters for sorenson communications is located there in SLC.