Here is my situation

I have little to no sailing experience (I've been out once or twice with a friend), but am a quick learner, so I'm not too worried about that.

We have a small lake here by my house (about 6 feet deep, 120ish acres) that I will do most of my sailing on.

I also live near the great salt lake in Utah and will go there a few times a month.

I am 6'4", 200 lbs, so I'm a decently big guy in good shape (I run marathons, so not big and bulky)

I want to be able to sail around and just enjoy being on the water, and I want to be able to sail with one hull in the water going fast (the small lake will be just for chilling, the great salt lake will be for speed/one hull stuff).

These are examples of what I'd like to do
https://www.youtube.com/watch?v=Dc8GI6RR_f0
https://www.youtube.com/watch?v=0RtdKC3eCek

I will primarily sail alone, but want to have the capability to take my wife, neices/nephews, and other family members.

I've been watching the local classifieds for a hobie 16 for the last few months, but all the good ones get snapped up pretty quickly, so I still am empty handed.

Thinking more about a hobie 16, I've read you don't want to sail them with more than about 280 lbs, so me and a child. Maybe I should look for a bigger cat. My big thing with going bigger is that as I said I will be sailing alone quite a bit, so I don't want something too overwhelming. I also don't want to lose maneuverability and speed, and want to be able to go with one hull up in the air

Now I'm thinking maybe Nacra 5.8. Would I be able to handle it alone? I have a friend that will teach me to use it, so I'm not overly concerned about how hard it is while I'm still learning, and as I said, I hope to become an advanced beginner/intermediate pretty quickly (a couple months?)

What does everybody think?

Thank you