The valuations on them appear to be completely arbitrary and in many instances the company seem randomly selectedWe had one recently from someone else who provided the opinion and the comps were 7 miles away and from another jurisdiction - whereas this property while in a more rural area had considerable sales that could have been used.If you use them to get an idea for property condition I find them to have some value but since they have no interior inspection reports, they are at best just a random guess of the value which could be off by 100%

Not a lawyer or tax person or anything. 

Consider long-term goals, market trends, improvements, tax benefits, and flexibility.

It appears to be marketed as a product that not only is a full roof solution like I would think of as a new rubber roof, but would address leaks and flaws in the existing roof such that the existing roof need not be torn off and replaced.

I'd find off-market deals, do some cosmetic updates, and then refinance. 

Take this 💥just-closed renovated property for example💥:With my query of "22757 Charlemont Pl, Woodland Hills, CA 91364 5/4/2400-3050,0.6,300" we get an ARV Estimate that is ~4% off, and I picked this at random just scrolling through recently closed in my areaAnd the Market Stats $/sf of renovated property in that Zip Code matches up pretty well, so I know the ARV estimate is realistic:You can also run Agent Stats to find/get in touch with the real top-agents in that area so you can triple-verify everything and/or list it with them when you are done.With the above, I am able to quickly vet every new deal that comes my way and spend more time on the good ones.

You should definitely have a CPA to advise you and professionally do your taxes.

They used to be the best, but now so many seem to outsource the process and maybe both the originating CU and the people they actually farm the loan out to try to make some bucks off it.  

Ideally something that is on web/app that'll allow me to keep track of different items come tax time. 

Most of the time, a DSCR loan won't show on your credit, but it will certainly show up on your tax returns.