The Alpine H701 processor is 4-way capable...meaning it can actively control a pair of tweeters, midrange, midbass and subwoofer(s). Since you are going to be running 3-way, it's overkill for your needs.
Not that it won't work, but it's like having a 4 speed car and never using the 4th gear. But install your speakers and practice for a while maybe before you add another pair of drivers.
Just wanted to point that out so you understood. From my reading of your initial post, it sounded to me like you bought the H701 because it has good "SQ." It doesn't have good "SQ," it's just a dividing network. //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif