Where's a good place to start for searching properties, finding a good agent (do typical sfh agents suffice for multifamily investing?)

Posting, by a process server, at the address shown for them in their lien filing, may suffice as service, I don't know. 

one LLC with a nice umbrellas insurance policy should suffice

If you self manage, 1.5X P&I should suffice, but don't gripe if you have to run over there on short notice to deal with an issue.

“straddle play” option.One of the quiet creative options ... that you can leveraging when it comes to controlling the deal....Read some of Rick’s articles... at first it may naturally appear that Rick speaks in riddles... but as you gradually begin to read more and more of his posts about “probate”... the more and more you will become to get amused by his comments and gradually begin gathering incredible wealth of knowledge for how to deal with all sorts of probate related circumstances.Sometimes if scenario doesn’t allow for wholesaling perhaps some other type of exit strategy can suffice instead...Or perhaps connecting the dots in this circumstance under this specific set of conditions may perhaps not be feasible...

Your transactional funding letter should suffice, if not find another one.

If you're willing to manage it yourself and can do some of the minor repairs, than the rent being 1.5x the P&I part of your payment may suffice.

In my area 2 acres will suffice.

At first I thought that saving up $5,000 would suffice, but after working at a real estate development company this summer as an intern I am worried that my target is too low.  

One question you may have had about filling it out was the "Legal Description" I don't bother to put that in my contracts but a tax ID would suffice there I am sure.