Twitter DMing only fans links/link trees

I am looking to send out 1000s of dm's to loads of potential subs online to sign up and was wondering if anyone currently at the moment is doing such a project and can give me some guidance on how to set up correctly and any pit falls to keep in mind?

I have some models with very big pages on twitter and maybe able to get the models to messages directly as 1 method, if so, does the model need to follow the sub back before DMing so twitter don't block message as spam?

Also, I have noticed a few girls who follow my account have like 3 posts, 20 followers and following 2000 people, I take it these accounts are warmed up enough to send me a DM as they have come through to me and not been spammed?

Any help would be great!

DM's can get your account blocked quite quickly. But some do it, probably more a numbers game if 1 signup generates x dollars compared to cost of account etc