Thanks all! So I ended up ordering the following:

Shimano ME3 Shoes
Pearl X-Alp Gravel Shoes
Shimano PD-ED500

I believe everything should be here tomorrow. I'm still not 100% sure if it makes sense to go clipless for me riding casually, but I'm in the situation where all my shoes are either dress shoes or running shoes with bulky soles.

Now another question for you....do you guys generally wear jerseys and shorts when you go out riding or do you go in street clothes (t-shirt and shorts)? I got a helluva deal on a Bontrager jersey and Pearl bibs, but I'm really not hardcore at all. Frankly I'm super out of shape and make it 5 miles max in my hilly neighborhood lol. Do I just wait on the jersey and shorts or what do you think?