Is it kosher deli if my blog is completely random in what it features? Or should I stick to one genre so I don't alient my 100 followers that I have now?

There are differing opinions on this kinda stuff.. I suggest doing a google search to learn more.

I generally wanna keep all my stuff together cause it's easier and it all helps each other build faster, but.. There are perks to having a specific blog or channel dedicated to that, like you mentioned some subscribers might not like some of your other content.. I just personally don't really wanna take the time to do all the work on two separate channels. So.. I do it all on the same page. But to each their own!