that sounds like a good plan.. if you're curious.. my most used plug ins are:
(rarely go a day without using this, it's on every track just about, as a CUTTING eq, it's fantastic, not so much for boosting.. it's my go-to cutting EQ though)
neve 88rs channel strip
(my default template for song writing has one of these on every channel to create a sort of "virtual console". i mix through these on every track)
(the bass on this is the best software bass i've heard next to my vintage hardware Siemens EQs)
(plenty of good software limiters out there, but i use the UAD, 'cos i have it)
Neve 1073 EQ and 33609 compressor
(great great great. one of the best boosting software eqs i've ever heard)
roland RE201 space echo
(as unpredictable as the real thing)
dimension D chorus
(never thought i'd use a chorus effect until i heard this one... amazing on acoustic guitar)
i'm still getting my head around the Fatso and the Massive Passive, which both have learning curves.
i've never used the 4k channel strip as i have the Waves SSL strips. i tend to prefer the Neve sound to the SSL, so i use the Neve channel strip.
but, once you have that card, you'll pretty much want most of the plug ins anyway.. highly addictive!
also, keep in mind, if you buy a new card, they often come with fat vouchers so you can get a bunch of "free" plug ins.. so price that out as well..