As I always used to do, Tou is facing forward (main body) and Eda is facing backwards (body on the back).
This means that as soon as your clone spawns, Eda sees him and simply uses
(Katon: Zukokku) - Fire Style: Intense Pain
Rank: A
Type: Offense
Range: Short/Mid
Chakra Cost: 30
Damage Points: 60
Description: A huge burst of fire that turns into a huge fireball and can cover a large area, burning all in its path.
As this only requires two handseals, which are made really quickly, your clone dies nearly as soon as it spawns; Therefore not even touching my chakra reserves.
After this, Eda and Tou seperate, standing back-to-back.
(Sōma no Kō) - Attack of the Twin Demons Technique
Rank: D
Type: Supplementary
Range: Short
Chakra cost: 10
Damage points: N/A
Description: The Attack of the twin Demons technique is the technique will allows Sakon and Ukon to merge their bodies with each other and to separate.
Note: Must have a Sakon or Ukon bio or a member of their clan to use.