I am exploring the possibility of not only fixing things but doing a renovation to bring an old half bath into a fully functional bath, renovate the entrance and foyer among other things and possibly even an addition to the house.

Currently, Denver allows 2 unrelated adults to live together, one of the worst.

Your 'profit' will come when you own and eventually sell an all TOH park.Here are some additional bullet points that I follow for your consideration.1- The best buyer is the one currently living in the home. 

So I live in the south bay of Los Angeles (Torrance/Harbor Gateway).

You will do better door knocking when you feel comfortable, and when you feel comfortable the people in front of you will feel more comfortable and they can tell (but we should also not feel like you are dressing for your living room either), and so dress how you would want to dress, in a way that is clean, professional, but more casual in clothes that fit well and are not uncomfortable to tight or too big--  otherwise you will feel it as soon as you knock on the door.  

I live in California and rent an apartment.

Purchased all cash as a major fire damaged home & knocked almost all of it down and re-built it with new addition and rooftop deck with jet-liner views of the city!

I own the land with a mortgage (owe about 225k out of 287k) and am living in one of these units.

FHA requires you to live in the property.

For ex you're putting $10k in at your employer then you could only put in an additional $13k into your Solo 401K.