DaV8or,
Just that you've thought of all those things puts you well ahead of the average buyer IMHO. I too have had the same debates and thoughts as we get ready to make an offer in a few short months (I hope).
My plan in reference to your questions:
1. I plan on seeing the bird first hand...a must for me. To keep from wasting money on plane tix, I plan on focusing closer to home, or going to a MSC that has more than one bird "on the lot" to look at. For instance, I hope to get up to Willmar at one point and go see all their 231s that I am interested in. A single seller, far off and away, will probably be passed by for me.
2. I think it's reasonable to have all the AD's complied with, if not, they will be corrected at pre buy with some form of agreement (in writing) with me and the seller.
3. I plan on paying 100% of the pre buy cost wherever that ends up being, and he will pay to fix any airworthiness items (again agreed in the written agreement, you can find examples on AOPA)
4. Most MSCs and some banks will do all the title searches and stuff for you and are good at it too.
My $0.02. Good luck.