Brainstorm for FimFic about 3 OC's dating Mane 6 members.

[BrawnyCharger 511]

I'm pretty soon going to write a Fimfic about 3 OC stallions of mine named, Brawny Charger, Windy Flare, and Handsome Charmer. In the story they move to Ponyville and are going to wind up dating 3 of the Mane 6 ponies, Applejack, Fluttershy, and Rarity.

Here's the profiles for the 3 OC's

I intend to make it relatively long. What I would like advice for is how can I get:

• Brawny Charger to win over Applejack.
• Windy Flare to win over Fluttershy.
• Handsome Charmer to win over Rarity.

Will there be any potential rivals, or any other characters who could get in the way of the relationships? How easy do you think it would be for each OC to win over each Mane 6 mare? How much resistance would the 3 mares have to the OC stallions' advances? Anything else I should know before I start writing?