Respond to these few questions, so that anyone trying to help knows what to stick to:-
1. How many days are you planning to stay? Normal hotels in Dar ranges from Tshs 35,000 to 60,000, these are the hotels that you find 7 to 12 km from the City Centre with moderate security;
2. Daladala fares are not expensive, it is almost Tshs 500 per route, though in some cases you need to take taxi (cab) especially during the night, or if you are visiting an area where there is no daladala route, these ranges from Tshs 10,000 to 30,000 depending on the distance;
3. Food prices range from Tshs 3,000 - 6,000 for the local areas but standard as you have mentioned;
4. You also need to be specific on some areas/places you want to visit so that it will be easy to advise, though some will come up during the visit; and
5. I dont think if you will need an escort, but Tanzanian people are so kind in directing someone to a place he/she does not know, you can even get an advise from the hotel attendant on whether to use taxi or daladala for a place you are visiting.