Co founder follow up questions

I’ve been looking out for technical confounder for a few years already. Back home and now that I moved to the US. After many many many meetings, networking events, posts etc I “think” I found the right person. Yesterday we had a great initial call where he checked many of the boxes of what I’m looking for and I was excited which was that “it’s him” moment. Now we are going into another call to share more stuffs about the project, long term vision etc. What are questions or things I need to do to find out if this is really the guy I want working with for the next years? Know that we are compatible. I’m in Miami and he’s in Denver. It’s not like we are gonna be working in an office for the time being until we really get there, raise fund and need to be together. What’s the process? I know it’s like dating again but I don’t know how to date a technical person or what to look for in that regard. He worked in the same domain I’m in (which never happened on the many other calls), he uses the same coding language, have the same vision and goal, understood and knows the problem, knows the market. I’m thinking on the following “filters”: 1.Have a call with a technical friend who offer to interview him. 2.Have a call with one of the angels investors 3.My wife says that I should give him a small project to do and see what he comes up with (see how he thinks, create, deliver etc) I was thinking on re design the page. Anything else that you think could be helpful? Also if you can share how to structure a vesting and cliff for later on would be amazing Thank you!