the 70% rule doesnt work the same on a 600k property as it does with a 200k property so how do i find out the accurate costs involved

You should always signed a written estimated contract specify what is involved, estimated hours and total cost signed. 

Google "bifold door ideas" for inspiration.I guessing you have plain slab interior doors in the rest of the house, so I'd recommend a simple, clean design to complement... like louvered, or a multi-paneled shaker style, or with large single frosted glass panes (they'll glow when the light is on in the laundry).

I would then call the lenders and get all details of the loan programs, fees and time frames involved.

It’s not as “clean” as Call Rail though, but it is cheaper if you’re just getting started.

I used Crime and Death Scene Cleaning in Ipswich, MA. 

I haven’t worked with her for any title issues but she’s known as one of the ‘go-tos’ in Indianapolis if you need to clean up title.

I would never put someone that in not involved, nor has nothing to gain or lose in-between me & my cash flow.

Wipe clean the intake areas.

Included was having his electrician check to make sure the property was safe for workers which involved flipping breakers and capping off flood exposed outlets.