If have investment property, we are looking for relatively updated units (we are ok doing some work ourselves), class C+/B tenants, with rents either close to market rate or that can be increased.

The hilly terrain is a main reason for this and you can't really see that on a map so knowing the areas is key.We have old housing stock as well so big things like plumbing and electrical can vary cost wise if they have or haven't been updated.

However, the success of your project will depend on factors like location, renovation costs, and market timing.Many investors have found great success by focusing on high-demand neighborhoods with strong buyer interest.

House hacking is a strong option if you're comfortable managing tenants, as it allows you to build equity while reducing housing costs.

No but keep track of those repairs as it will add to your cost basis when you go to sell it and have to pay capital gains.

For more expensive properties, the flat fee means the credit/refund increases exponentially, like $19,000 on a $1 million property.4.

Have reserves for vacancies, repairs, and closing costs.

So, this cost a bit more in closing costs BUT your are out 34,750 plus closing costs instead of putting down 25% of the 340k which 85k plus closing costs. 

Things that would be helpful to know: how much are your holding costs? 

TIC offers lower entry costs and flexibility but comes with shared risks and complexities.