Unsure about spindles...

[SRD art]

I'm about ready to dig into my 77 Suburban and have been looking at spindles. I am doing an axle flip and C notch out back was considering a 3" spindle and then cut the factory springs as needed to get about a 1/2"-1" rake up front. Note- I am using a '90 Suburban 1/2 ton suspension to swap out the 77's 3/4 ton parts, and will be using 20" wheels.

There are several spindles out there in various drops, is one better than another? Are there any brands to avoid?

I would like the truck to be fairly responsive too, are there any that specifically have better geometry?

Thanks everyone!