You can get AO's a listsource for about 16 cents a lead or less so I'm assuming they are probates.  

When you get an AO/probate that is just about the best you can get. 

You have 659 AO out of state prospects in your county so here is what I would do.Buy those 659 and add to them 341 in state AO for a total of 1000Alternate you mail piece between the large text PC,  the small text PC, zipletters and YellowLetters.Here is the breakdownList - Cost 220.00+- ( good for 6 months)Yellow Letter 1 - Cost 760.00 +- send month 1Large Text PC 5 color 1 side - Cost 500.00+- send month 2Small Text PC ( My new one) color 2 sides - Cost 450.00 +- send month 3Zip Letter 7 - Cost 730.00+- send month 4Small Text PC Mine - Cost 450.00 +- send month 5Large Text PC 5 -Cost 500.00Total Spend 3610.00Over your budget however by month 2 you should have a deal in the pipeline. 

The divorce list isn't a list I would send to and absolutely mix in AO, OO and OSAO...

Definitely is for me.If you build a list, say AO in a zip code, and then filter by last recorded date or last market sale date, list source will trim the list WAAAYYY down to only the records they have a date for.

A/O, probate, delinq. taxes); or can it be a mix between some of these to equal 1000 names?

When these investors talk about a stock such a "O" being a safe placement, because it operates leases with Walgreens, and medical services are a necessity there in setting those tenants as gold-standard, and servicing those leases as great investment, what they are saying is "Real Estate is THE safe bet", just in a longer narrative of such. 

Hi BP,  I sent out a very small letter campaign last week to about 100 AO's that I found by researching the tax assessment site.

You can specify anything you want in your AOS though and have it written up however you want.

@Ao OkiiWelcome to Biggerpockets.