Here's me giving it a shot with my novel... And I'm very open to criticism, don't worry come at me!
Oh and just to give a helping hand... 1 book page is usually (though it varies depending on font and sizes) 400-500 words, which means that 5 pages would be around 2000-2500 ... My first three chapters are all at 900 words, which would make it 2800 words, so in your case, 2 chapters would do good, with the third one being extra if you wanted to be exact with the word count. Hopefully this saves you from having to count an estimated chapter length
Genre: modern fantasy