Sounds like you do have some experience, so don't let the fear stop you.

I need to replace several flush mount fixtures in a duplex and I'm curious if anyone is having any luck using integrated LED fixtures without replaceable bulbs in their rentals.

With your  well thought out goals, and the awesome timing of being able to gear your career to real estate at this point it sure sounds like you are on your way to success in your investing.  

Connecting sounds great.

I've got all the contractors you could imagine (I work closely with 7+ builders in New Construction) and I can provide sound advice as a I am a realtor (My group just finished an investment with 16 duplex units).

I see this talked about in CE class. but in practice never going to happen.as stated above.. until you have all signatures offer counter offer, Acknowledgment of counter offer. you have no contract... you simply have an offer.And it sound like you went in at a price YOUR agent recommended so it was not full price.. so there you go... most important word in Real Estate is NEXT. 

I'm thinking about:1 replacing the counter top from tile to some other cheap alternative2.

I would love to hear more about your current 19unit in Phoenix, sounds like a great blog topic.

Josh, it doesn't sound like this will cash flow well as a buy and hold. 

When you start using the 100K in savings replace it as much as possible with rental income.