Read all the stickys.

Im putting a dual blade GFS lil pickup in my strat style samick. i dont plan on keeping the middle and neck pickup for two reasons, a) they suck and dont want to invest money in more pickups, b) i mostly play hard rock and metal now.

so do i need a selector? or can i hardwire to the pots?

also what does a 500k pot offer over a 250k and when should i use one or the other?
what would you be switching between?

unless you are splitting (i don't think those split), you'll just need a volume and tone pot, as Azrael stated above

yeah, just hardwire it, i guess you might be able to series/parallel switch, or do phasing if you have a 4 con pup.