So in your vision, Trump gets nominated soon. Then the 65- 70% of Republicans who have not been voting for him suddenly embrace him. They too want his ugly slash-and-burn, take no prisoners, everyone is the enemy, and "Trump alone" knows what's best. All other Republicans embrace the idea that no explanations or facts matters. We don't need to know the how for the big promises. We only need to believe, and have faith that this Messiah will make America GREAT and YUGE again. Then, Independents, too, will decide it's better to go with a radical, vain, megalomaniacal candidate with no elected experience, a born again conservative without even a fundamental understanding of the philosophy or desire for less government, rather than the course we're already on, a course many of them see as safe. Next, as you see it, at least enough Hispanics and Democrats say, "Hey, we want to jump on that bandwagon because he's going to ....what...." Betray the whimsies he's been asserting to his new friends the Republican?
Then, the great malicious blowhard Trump becomes president and has no political party to work with; he's alienated both parties with his mean-spirited attacks and inane screeds. Yeah, that's a picture of success.
Good luck with this idea because unless you can install a dictatorship Trump isn't going to persuaded anyone to follow him after his vile attacks on everyone.