You don't know that, didn't let his gruff initial conversation run you off, and now you've had a nice chat with him again.I'd make it a point to call him every month or two, just to say hello.

We were discussing some of these same things over at:Zoning/ADU advice in Seattle on the BiggerPockets forumshttp://www.biggerpockets.com/forums/52/topics/396578-zoning-adu-advice-in-seattleYou may find the conversation and links helpful there.

It has helped my company quite a bit in the beginning to manage who we are talking to, what our last conversations were, sending out mass emails, etc.

Here are some recommendations for you:Find and connect with other BP members that are in your area: http://www.biggerpockets.com/meetRead Beginner’s Guide: http://www.biggerpockets.com/real-estate-investingCheck out BP Podcasts: http://www.biggerpockets.com/renewsblog/category/podcast/If you wish to tag someone in the conversation on the forum, type @ followed by their name and then select the name of that person which should appear below the comments box.

When it comes to structuring the deal, tell him you will give him his asking price but you need him to work with you on the other terms.things like "I'll give you enough money for down payment to show that I'm serious" is a good start for the conversation about the down payment.

The only payment I ask for will be that of your conversation and knowledge.

I'd consider the senior care facility conversion over an event facility.  

Additionally, before you move forward with the conversation, be cognizant of the risks to the partnership that you face by attempting to negotiate for a few additional percentage points.  

In which case, why not just have a short quick phone conversation, which is actually probably the best advice most honest.

Keep an eye on the short-term rental conversations re airbnb legislation.