JVC KD-G510 in a '96 Integra LS

[R.s.D]

tomorow im gonna pick up a new deck for my '96 LS to replace that crappy OEM tape deck
i was thinking about getting a JVC KD-G510 Deck for $150 CND which i think is a good deal and has aux inputs in the front which i can use for my ipod

i dont want to order a Scosche HA02 Harness becuase cardomain wants $16 for shipping so will a HA028F Harness work? looks like 2 different harnesses combined into 1.

also will i need a HA1563 Installation Kit to make a deck fit properlly into my car?

im guessing that the Metra 72-7800 Speaker Wiring Harness is pointless. would it be easy to splice new speakers into the existing wiring?

any help would be greatly appreciated