Questions about Jodhpur!

Hello everyone! First of all, I'd apologize for being pesky and estering a city sub to ask touristy questions but please answer if possible. I'm planning to visit Jodhpur with a few friends towards the end of February and have a few questions. 1. Will the weather be ok enough to explore at that time? 2. We're planning to stay in a hostel. Which area should we book our stay at? We're currently planning to stay near Ghantaghar. 3. What is the best way to explore the city? Currently we're planning to visit Mehrangarh, Jaswant Thada, Toorji ka Jhalra and Blue City on foot in a single day on our Day 1. Is it viable or would we need a vehicle? We're all pretty used to walking 5-6 km per day in our daily lives. For longer distances, like Mandore Gardens, Umaid Bhawan, Zoo and Kaylana Lake, would one day be sufficient? And what would be the best and the most affordable way to go about the visits? 4. Would we need more than 2 days to do justice to our visit or would it be ok if we reach early morning on Day 1 and leave late night on Day 2? 5. Any idea about good rooftop restaurants with good fort view which is also affordable (7-8 hundered for two people or something) and has good food? Again, sorry for being pesky. Other advice is welcome too!