Pretty exciting times..looking for your first e-bike. I just went through it. There are a lot of folks on this forum that offer good advise.
1) As most will suggest, if you can locally, view as many e-bikeas you can. For a lot of us, thats not all that easy.
2) Read a ton of reviews.
3) Your desire to by local is wise if you can get the model you want. Local service is a plus. I didn't buy local but the manufacture I purchased from has a relationship with Velofix (mobile bike shop), so I'm comfortable with that.
4) I see two main options in a lot of styles, peddle assist or peddle assist with throttle. For me a throttle is a plus and I'm glad I went that route. The short period of time I've been riding I have found it extremely useful for starting on inclines, trails, gravel and loose dirt. Also, just using the throttle is a "kick in the pants".
5) Riding position especially important as we turn that "60's' corner is pretty important. Bent forward to much is an issue for most (including me).
6) A good battery is extremely important. Most 2018 models boast the larger and newer batteries.
7) Little things like a great battery mounting system with a great connector are important. I have heard about issues about batteries a little loose on the frame and causing issue with the connector.
8) Front sprocket guide/guard is a great thing to have. Eliminates chain jump and messing up pants.
Have fun on your search!