In all honesty I don't like such calculations especially those involve other players performances.
I just wish Grigor good health and good luck. Sometimes it is better not being seeded and go with your luck, drawing some beatable seeded and opening up his draw nicely, rather than being seeded 32 and get a top 8 player second round
So it works both ways.
I hope for the best for him
Ranking will come with a good play and couple of wins. He has time till RG to get seeded with is the most important after all.