It's been said before on this thread but, I really have to recommend making sure you haven't exhausted all of your possibilities for an RA in the state you incorporate in. There HAVE to be trust worthy, zero fucks given RAs who will stick with you. There are people who could very well have the ears of federal prosecutors, especially if they do this kind of work for other publicly unsavory clients. You might even be able to find an RA who will do this in a very corporate and turn key service setting.
If you don't want to do this: get land with produce processing buildings that are more durable and easier to defend, look into reinforced walls, windows, doors and infrastructure for renovations and look into communications options, security systems and protocol for dealing with mail that might be dangerous. If you choose the right location, police could be half an hour away and not want to fuck with TTS bullshit and there have to be really solid self and property defense laws. Do consider beanbag guns and rubber bullets and pepperspray/mace. Maybe tasers?