the advantage to that basslink is that the amp is built in. Usually those bass packages don't have very powerful amps, but if you're hard up for space, than those self amplified bass enclosures work best.
You should probably go with the alpine mrp F300 to power the speakers, then if you choose to go with a good sub, go with a nice class D mono amp just for the sub. But if you go that route, I would suggest getting an Optima Yellow top battery or Kinetik HC1400 battery as having 2 amps really puts a strain on the factory alternator which is only 70a. I have seen 120a and 150a alternators and those would be recommended when having multiple amps or if you happen to be powering subs with more than 2000+ rms watts!
I'm probably going to do the Big 3 Upgrade since my lights somewhat dim...here's my system in the trunk area:
and here's the new 3cf box I got yesterday