The first esc you listed is only designed for 6-7 cells,yours is an eight cell pack.
The second one listed isnt enough amp rated for 2 motors hooked together.
This is a 90 amp one which will work with the 2 motors.
ESC Car SPC 90 Amp brushed..
http://www.overlanderbatteries.co.uk...mart&Itemid=70
Brod.