B
It's going to take a long time to reach Opticraft.
The number of posts it will take to reach Opticraft can be calculated. OPTICRAFT can be thought of as a number in base 26, which can be converted into a base 10 (decimal) number.
First each letter needs to be converted into a decimal number, A=1 B=2 ...
So ZA=26,1 this is still a base 26 number but with numbers instead of letters
In decimal ZA=26×261+1×260=677
OPTICRAFT=15×268+16×267+20×266+... =3,267,201,867,508 posts
That is more posts than have ever been made on this forum by many orders of magnitude, to finish it in a year 103,602 posts would need to be made every second.
It could work if you skip all non words so the next one would be I.
base 36
11477597030054260886242646046406264 =