Should I buy? What to match?

[elks]

I have a good line on the following from someone I know and mostly trust(trust him more than people I do not know) I have him at just under $1500 for the following:

Kingpin chevy front 60-professionally assembled. 5.38:1 yukon gears, highsteer, 1 ton tie rod, disk brakes, detroit locker
Corp. 14 bolt rear - professionally assembled. 5.38:1 yukon gears, drum brakes, detroit locker
all stock chevy brackets intact.

I am not sure what to match with in the rear end? I am seeing several dana 70s rear around a couple dana 60 rears and 14 bolt as my options. Which should I go for as a rear end?

Also since it is a 5.38 front will i have to change out my carrier?

Thanks all.