.)- price/sq ft is still relatively much cheaper than other comparable cities- lowest vacancy rate in Columbus history- one of the panel members who spoke at a housing development I went to named Bob Schottenstein (developer who has built over 150,000 homes) stated Intel will do to Columbus what Disney did to Orlando 

Since that time; they've done quite a bit work and replaced (or are still in the process of replacing) most of the big ticket items like termite work, the electric panels,  all appliances, flooring, etc. 

As for Electrical, aluminum wiring is a red flag not seeing it can't be used but it has greater chances of malfunctioning and causing a fire vs copper(aluminum was used more in the Vietnam era but this is just precaution), make sure all electrical work is grounded (you can tell if the receptacle are 2 prong and not 3), Service and Panel size would also need to be adequate if you plan on adding more rooms and circuits(I recommend at least 150 Amps).

No more leaks and the light that comes through the new panels is amazing.

I see interest rates going to rise mid next year so I think my best option would be to wait till my roof is updated and with solar and take out a HELOC on the property.

Not mobile home type pre-fab but where they panelize the house in a shop and then truck it to site either in panelized walls or even in pre-assembled rooms/floors.

Try Seattle Investors Club or SIC, @Julie Clark is a wealth of knowledge and great ambassador for the area.Additionally we have our monthly meetups in bellevue, WA as well as  @Michael Haas with his house hack meetup which usually has great topics, networking, surprise panels of experts sharing great tips, strategies, and ideas.REAPS - real estate association of puget sound - @Angelique Tinney has great panels, monthly meetups in Bellevue, WA and across the sound too.Most of us are local PNW seattle investors and can help coordinate that transition from dade/miami/broward counties.Both FL and WA are no income tax states with relatively low property taxes from what I've seen.

We will be adding solar roofs and Charging EVs to all properties in the next 5 years.

This would require you to have availability in your electrical panel to support the new load.

I come from the construction world, project management and fabrication mostly, and am kind of obsessed with efficiency in all my dealings, from solar LED lighting to seamless showings and leasing.