Sump Pump / Grey Water Dilemma

[Kathryne Omaits]

Hello Bigger Pockets Community.   Here is my BIG challenge.   Trying to sell my residential home in Michigan (and moving to Atlanta GA).   Tri-level, 5 acres built 1973, here 20 years.  Upon February inspection, septic field failed - 47 years old.  One  of the costliest issues to have come up.  That's being dealt with.   I have my perk done and permit to start.   Here is the problem I am hoping someone may have some experience and thoughts to share.

Sump pump in laundry room, lower level, drains into field facing east.   Washer located on north side and drains into sump crock; sink-directly across room from sump and shower located south to sump pump also drain into crock.   Plumbing under floor (which has just been retiled for sale).   This is an inspection flag and deal breaker for mortgage companies I have been been told.  I want to list this to any sale market. 

I have been told there is a sump pump unit that sits in canister type set up that can be set on floor and could solve the washer issue (another cost).  

So far my septic man is saying would have to have another crock put in floor for shower/sink (very expensive).   Because of the plumbing being in the floor creating the gravity issue an above ground sump pump unit won't work.  I am repeating discussion and not knowledgeable about sump/septic issues although I am certainly learning now.

Septic person has suggested using a camera to see where lines drain to.  Not quite sure at this moment I undertand this (the conversation just took place this morning) and how that might create a solution (and another cost!).

I'd like to be able to save the sink and shower as this is a selling feature-not sure what to think.  I'm wondering (and hoping) if anyone has any experience or thoughts they could share that would help solve this issue or what other options there might be.   

Thanks so much for taking the time to read this.