Washington (CNN) - This Cain is building up to Category Five strength.
A spokeswoman for Herman Cain confirms the surging GOP contender is scheduled to meet with Donald Trump on Monday. A stop at Trump Tower has become the latest sign of Republican prowess. The real estate magnate has met with Rick Perry and Mitt Romney in the last couple of weeks.
Before traveling to New York, the former Godfather's Pizza CEO will fly to the West Coast for an appearance on NBC's Tonight Show with Jay Leno Friday night.
On Tuesday, Cain rolls out his new confidently titled book: "This is Herman Cain! My Journey to the White House." The customary round of radio and TV appearances plugging the book will ensue, his spokeswoman added.
The whirlwind week awaiting Cain comes after he stunned the Republican establishment and finished first in Florida's recent GOP straw poll. That result was dismissed by some pundits as a fluke.
More difficult to brush off is a new Fox News poll released Wednesday found Cain a strong third (17 percent), just behind Romney (23 percent) and a slumping Perry (19 percent).
Cain is aggressive taking on the two GOP front-runners as he is with setting his schedule.
In an interview on CNN's The Situation Room with Wolf Blitzer, Cain was surprisingly tough on Perry's stance on giving in-state tuition breaks to the children of illegal immigrants.
"I could not support Rick Perry as the (GOP) nominee for a host of reasons. Him being soft on securing the border is one of the reasons," Cain said.
He nearly said the same of Romney because of the former Governor's past support for an individual mandate in health care reform in Massachusetts.
"But I believe that he has backed off of that," Cain noted.
Christie? Cain takes the New Jersey Governor at his word that he is staying out of the race. "Christie has said for a long time he wasn't interested," Cain told CNN.
Former Republican National Committee spokesman Doug Heye points out much of Cain's support comes from outside Washington, a sign voters are looking for a fresh face.
"I haven't seen or heard much in town, but on the grassroots level, yes," Heye said.
Those grassroots supporters can tell you what "9, 9, 9" means. Cain would replace the nation's byzantine tax code with a simpler system that sets individual and corporate rates at 9 percent. It would also add a new national sales tax, also at 9 percent. For Cain-iacs, it's more than a plan. It's an applause line.
Another barometer of conservative credibility, The Wall Street Journal has taken notice. "Whether he deserves to be president is something voters will decide. But he deserves a serious look," wrote WSJ columnist Daniel Henninger.
The column did raise the issue of Cain's electability, noting he has never held office. Former Alaska Governor Sarah Palin seemed to blow off Cain's chances, calling him the "flavor of the week."
Questions loom for Cain. Yes, he's wealthy. But can he raise the funds needed to take on Romney and Perry? Now that he has become a serious contender, can he defend his positions, like his "9,9,9" plan in a debate?
Cain has proved he can slice up the competition. Now he has to deliver.