I would rather pay cash on the rehab in addition to the downpayment on the purchase.

I know there is a lot here and I may have not covered it all but any feedback and suggestions are greatly appreciated!!

I am a first time real estate investor looking the following property : https://www.redfin.com/OR/Forest-Grove/2418-Cedar-Cir-97116/...its a pretty large duplex in Forest Grove OR,  the trick is though, its on a lot zoned for a 4 plex so I am lookinginto house hacking, converting into a triplex, then living in one unit while renting out the remaining two unitsThe left garage has been converted to living space, with a living room, half bath, a laundry room with a sink and some counters/cupboards and a bedroom, it is a part of what was an existing 3bd unitIf I were to acquire the asset, I would first attempt to convert that space into its own unit The line items as I see (be in mind, I am totally new to this) would be to >put up dry wall where the door to the rest of the house is,>add a shower to the half bathroom >install a water heater in the adjacent 3bd unit> install a kitchen in the laundry room, (stove , oven , sink, counter space)>add a shower to the half bath Assuming I can convert it to a 3plex, I could at-least cash flow on my investment after I leave My plan would be to put minimum down payment of 3.5% (FHA loan) that way I can have a decent amount of capital free to do the renovationsThe only concern is when I crunch the numbers to get my ROI, I have no idea how much its going to cost to convert the additional living space to a third unitAny experienced investors here know how I can estimate this before I try to make an offer?

Especially if the deals you look at have been on the market for a while and aren't going to have multiple people looking to write on it.You could try having an additional person on your team who's niche is providing boots on the ground services.

Therefore, for a 3rd party to offer these services they generally have to find ways to provide affiliate services or generate additional revenues.

I have homeowner's/hazard insurance on the property through my mortgage, but I do not have any additional landlord insurance or other coverages.  

Feel free to private message me if u have any additional questions. 

Any suggestions?

Since we purchased it, we brought power back to the property currently set up as 2 RV hookups and additional outlets on a backer board (for a total of 200-amp service), had an RV pad and driveway put in, and had the developed year-round spring well brought back online - there will be a pump house built near the backer board this Spring (1st photo).

Look into other markets( San Antonio/ Houston/Dallas)Any suggestions are greatly appreciated!