d6500 - Pulling truck application

I have been referred to XS power from multiple people now, i was wondering if the d6500 would be the correct choice for my application. Running a electric/hydraulic pump for power steering assist, a fan for cooling, and a few gauges. Also will be starting the truck, sometimes longer cranking is needed depending on temp outside.

Also can they be ran in parallel with another 1000cca battery.

Thanks any input would be appreciated!

- Clinton