Monica currently has 2969
(as of the QF of Indian Wells)
Kim will have something like 3239
(taking off 83 from Bol, 55 from Miami, and adding 2 points to replace them)
Which means that there is a 270
point difference between them.
Monica seems to be playing Sarasota, Amelia Island, Family Circle Cup, and Italian Open.
Kim looks like she'll only play red clay events in Europe, those being Rome, Berlin, (Bol).
It looks like Kim needs to do well in all her events in order to hold off Monica for that No. 4 seed.
Interestingly enough Martina
is in a bit of trouble herself....she might not get a top 4 seed. Taking off Family Circle (282), Berlin (170), Rome (182), and Miami (185) she'll have 2779
So it looks like a three way battle to round out the top 4 seeds!