Leaf Springs!!

Hey everyone just buying the final parts for my build now and I'm pretty much left at the leaf springs. I'm a little unclear on exactly what weights I would be adding together to figure out what stage springs I need... is it everything or just what goes in the bed? My build is as follows

CBI Baja T3 front bumper (Aluminum)
Warn Evo 10s winch
CBI full overland skids (Aluminum)
CBI trail bolt on rock sliders (D.O.M)
CBI T3 High Clearance rear bumper (no swing arms, steel)
Kings 2.5 shocks (25001-119A and 121A)
SPC UCA
Dirt Kings LCA
Prinsu Cab Rack
SCS BR6 rims 17×9 -38 offset
Unsure about committing to the 35s yet... its gonna be BFG KO2s. Either 34 or 35 inch
A bigger spare tire... in the stock location for now
Keeping my bed space open. For most use its going to be empty but I do frequently carry dirt bikes in there so that'll be at least 250 pounds geared up in the bed.

I'm trying to figure out if I need to add everything together here or just base off my rear bumper and bed weight.

Also follow up question... got the 600# springs for the Kings front shocks do you guys think I need the 650 or 700 springs? Thanks for any info!