are you serious? alpine have one of the best names in car audio because they're quality products, that perform really well for the price. I'd like to see any brand match the achievements that alpine has made in its history. Companies like focal, rainbow, kicker, whatever, specialise in speakers and amplifiers, alpine specialise in a complete package, without compromise of quality.
however, the type r splits are excellent for young guys who just want a set of splits to flog the crap out of them, and show off. they make a solid midbass, and take a lot of punishment. Tweeters aren't real nice though.
i'd revise your selection and buy SPX-17REF for the front, SPS-600 for the rear, and a PDX-2.150 for the fronts, and a PDX-1.600 or 1.1000 for your woofers. rears arent important.
alpine do a pack for $799 that includes the SPX-17REF + PDX-2.150, about $500 off. Cheap as, i'd like to see any other brand match that SQ and amplifier quality for that price
they also do a pack that comes with a PDX-1.600 + SBR-S122V for $999, thats about $400 off. Ported sub box, can be a little boomy, but they make a lot of bass, only reason i dont have one, it wont fit in my boot.
you'd have matching amplifiers, that are small enough to hide under your seats, and still make decent power.
that pioneer unit you've picked isnt' available in australia as far as i know. so fat chance of warranty or backup support if you have problems.