Double future expansion RL

[Twikzer]

Current equipment:

Motherboard: Maximuss V Formula
CPU: i7 3770K
Graphics: Asus GTX 770 OC
RAM: 4x Kingston Genesis 10º Aniversary 4G, 1600 MHz
Power supply: Corsair 1200i
SSD: Kingston 3K 120G
HDD: WD blue 500G 7.200 RPM | Seagate Barracuda 500G 7.200 RPM
Pre-assembled radiator: Corsair H110
Case: Corsair Vengance C70

The idea is to "prepare" it for RL and later put everything with RL except the hard drives.

"Preparation":

Motherboard: Maximuss V Formula
CPU: i7 3770K
Graphics: 2x Asus GTX 770 OC
RAM: 4x Corsair Dominator 8G 1600 MHz
Power supply: Corsair 1200i
SSD: Kingston 3K 120G | Kingston 3k 240G
HDD: Seagate Barracuda 2T 7.200 RPM | Seagate Barracuda 1T 7.200 RPM | Seagate Barracuda 500G 7.200 RPM
Case: Corsair Obsidian 900D

RL:

Option 2 circuits:

Circuit 1: Reservoir > pump > Graphics > Radiator > Reservoir
Circuit 2: Reservoir > pump > Motherboard > CPU > RAM > Radiator > Reservoir

Option 1 circuit:

Reservoir > Pump1 > Motherboard > RAM > CPU > Radiator1 > Pump2 > Graphics > Radiator2 > Reservoir

Questions:
-Will the power supply I have support RL option 1 and 2 (separately, of course) and the rest of the additions, or will I have to buy a power supply just for the RL?
-Anyone who has physically the 900D. Does the 2-circuit option fit?