I have done analysis ARV of $300,000 (conservative since it's my first flip), rehab cost estimated ~$30k put offer in at $180,000 and agreed to meet in the middle purchase price $184,500 How did you finance this deal?

How you worded it will be the difference between one party being able to terminate the lease or both parties needing to be in agreement to terminate the lease.Personally, I would be pushing the tenant that wants to stay to leave.

I've been struggling with getting 0% yield on my savings account and seeing prices of my potential investments go up at 5-15% over the past year...Anyone have a good solution as to where I can invest and try to grind out slow conservative returns? 

I've been pretty conservative with the numbers; income lower and expenses higher.

More than likely one party will be spending more than their fair share of utilities.

That has not seemed to be the case to the most part. 

A few of mine include:Draining outside hoses, and bowling out any irrigationTesting sump pump and removing/draining any hose extensionsCleaning out gutters to avoid ice damsThermostat upgrade to a smart thermostat to conserve energyFurnace cleaning & check upFriendly reminder to tenants on snow removal responsibility :) What's on your list?

Assumptions look good for the most part. 

I think the most difficult part of all of this yet the most exciting part is that it's a "choose your own adventure" type of thing..

Our rental market here in western WA is so hot and short of inventory that we can just put up a quick ad on Craigslist and expect multiple inquiries that we then run through third-party credit checks.My earlier comment simply came out of years of experience in Minnesota where casual insulation of plumbing can prove costly.