1x 610mm ATX 24-pin cable
2x 750mm EPS12V/ATX12V 4+4-pin cables
2x 650mm PCIe dual connector 6+2-pin cables
2x 650mm PCIe single connector 6+2-pin cables
2x 750mm SATA cables
2x 750mm Peripheral cables
Since the Corsair SF750 is a relatively high end PSU with decent power output, you might want to consider using 16-AWG cables since there's not much difference in cost.
The BitFenix Alchemy 2.0 Cable Extension Kit looks like it has 16-AWG cabling:
https://www.bitfenix.com/products/premium modding/alchemy-2-0-extension-cable-kit/alchemy-2-0-extension-cable-kit-specs/
https://www.overclockers.co.uk/bitfenix-alchemy-2.0-cable-extension-kit-black-cm-35c-bx.html
The Phanteks Extension Cable Combo Kits looks like it's 18-AWG cabling, so is thinner gauge and therefore rated for less current throughput:
http://www.phanteks.com/Extension-Combo.html
Going to Purchase :
upHere Sleeved Cable extension Kit White 30cm £28
TRIPLE layer cable weaving design with 16AWG wire
Package Contents
(1) 24-pin ATX Cable 30cm
(1) 4+4-pin EPS Cable 30cm
(2) 8-pin PCIE Cable 30cm
(2) 6-pin PCIE Cable 30cm
Please let us know what you think of the standard of the upHere cables are like. Would be interested to know if you recommend them. Thanks.