Decided to get a Rosy ^^ I need some help though.

Hi all! After much deliberation between setting up a small fish tank and going all-in on a new project, I've decided that I really want to commit to getting a rosy boa (after I save up for the snake and an appropriate set-up, of course.)
But I'd like some advice from you all!
The first question is where to buy a rosy from. I'd prefer to pick the snake up rather than have it shipped, so ideally, I'd like to be able to get into contact with a breeder in Virginia or any of the surrounding states (Maryland, West Virginia, Delaware, Kentucky, Tennessee, North Carolina, or even Pennsylvania.) But, I'm having a lot of trouble with finding breeders near me. I also know they're born around August, so maybe that's why?

Secondly, I've heard talk about bioactive vivariums, with plants and isopods/rolly polies (I think.) Could I do a set-up without that and instead have false plants and no bugs? If not, that's okay, it just sounds a bit daunting (doesn't everything new sound that way though?)

And thirdly, do you all have any recommendations for things like the tank (size, brand, or otherwise, though I'm thinking I'd like a side-opening one rather than one with just a top lid,) substrate, hides, etc.? I'm curious!