You may reach at Shimla station around 12 to 2 in the noon according to the train you board. Prefer first one as you get ample point.
Some tips -
Always prefer stay near your transport or transit point, which also usually means around main local area.
If you have limited time then see distance between transit point market and places you want to see.
In Shimla near railway station.
If you are traveling in off season then always go for 2nd or 3rd Street stay from main market as they are cheap for accommodation and food and in walkable distance.
At Shimla, during off season, online or offline you can find 800- 1200 RS double size bed rooms for 1 night and day. If you are solo go for dorm rooms.
Rest for 2-3 hrs in Shimla at noon. Then take a walk up to the ridge, Christ Church, scandal point and jhakoo temple through local market. Upto 4pm reach at the scandal point. 1.5 hrs are enough to eat walk click pics there. Then from church you can hire shared cab upto jhakoo temple unto 250-300 and split between 4-5 people. Or opt for govt van costing upto 30 RS each. Don't go more than 300 ( total rent) for shared cab. You can hike up to jhakoo temple. It's 30-60 min hike. Enjoy the street and view. At Temple beware of the monkeys. Visit temple. No entry fees.
TIP - While returning here is a hack if you don't want to do treading. At the temple during closing time, wait there around 6:30 as local shopkeeper closes their shops. They will sight you as a easy cash and may ask upto 150- 200 per person ride up to down. Be persistent, as off season and closing time, they goes down upto 50 RS per person. If you are solo, ask any single bike rider.