For IPAs/IIPAs it is very common to do both hopstand/whirlpool + dryhop. The dryhop is slightly more important IMO, but not by much.
Here are some rough estimates for how the hops are divvied up (by weight) in a couple of the top IPAs/IIPAs out there:
Russian River Pliny the Elder
28% early (or hop extract)
14% middle
28% late
30% dryhop
Fat Head's Head Hunter
21% early
17% middle
28% late
34% dryhop
Ninkasi Tricerahops
19% early
12% middle
27% late
42% dryhop
Stone IPA
22% early
0% middle
44% late
34% dryhop
Kern Citra IIPA
13% early
8% middle
25% late
54% dryhop
Firestone Walker Union Jack
6% early
19% middle
31% late
44% dryhop
Alchemist Heady Topper
0% early (latest info is that no actual hops are boiled – only hop extract is used at this point at 10-15 ml per 5 gallon batch)
0% middle
43% late
57% dryhop