Yes, indeed the name is spelled Gerstner, not Girstner. Sorry for that slip-up, which happened to occur 4 times in that post!
Yes, there is much to be commended for in the seeking methodology, except Edwards, in his justification of the use of means by unregenerate, comes perilously close to the Roman notion of "merit of congruity", which merits grace proper.

Some years back I used the concept of seeking, with Scripture refutations of the other 'S's to challenge the Arminian addiction of some, within the PCA fold, to the heretical EE, a "tool of evangelism", invented by James Kennedy of Coral Ridge, FL. In the end I was castigated and stigmatized as a "HyperCalvinist"...
Now, am happy to see that not all modern Presbyterians are addicted to this form of false gospel peddling.

For the truth's sake, which dwelleth in us, and shall be with us for ever (2Jn.1:2).