T5 short term parking is normally at a minimum premium to T5 business parking.

Pod parking requires
a) a walk from car to pod station - depends if you can get a spot near the pod station or some distance away from the station
b) very short walk from pod stop to lifts
c) take lift from level 2 to level 5 departures
d) walk right across from one end of T5 to the other end of T5 to get to F check-in

Normally I park at the last set of lifts nearest the F check-in on level 2. Level 1 is full of cars meeting arrivals and Level 4 is full of cars for departures. Level 2 or Level 3 leaves you with the best chance of finding a parking bay near the lifts at the far end.