Appraisal low w/ mortgage contingency & no appraisal contingency

[Felix Stone]

Hi All - A friend told me about this site and there is a wealth of info but couldn't find what I was looking for. 

Context

I put in an offer on 4 off market properties in Pennsylvania. Offer is for the total price and all the properties are listed on one contract so eg - I put in an offer of 400K and listed all the 4 properties in the AOS. Offer got accepted and I am getting individual loans from the bank on each property. Offer is the standard PA contract and has a mortgage contingency with $300k loan price. However it does not have an appraisal contingency. 

The bank is asking for individual prices of the property for these individual loans. 

I am pretty sure the appraisal for all 4 combined will come around $360k( the numbers worked for me still so I went for it, also I think I rushed :()

Question 1

What should I give the bank as individual property prices knowing they will get an appraisal for each property? anything to look out for here?

Question 2

If(or when) the appraisal comes in lower than $400k combined(lets say $360k) and so assuming the bank will now not loan $300k at 75% LTV per the AOS, would I be able to ask the seller to lower the asking price and if they don't (and I don't want to pay up the $40k difference), could I back out of the deal without losing my 12k total deposit?

Hoping for quick responses since I have not send the EMD yet. Thank you so much in advance for taking time on a Sunday to help out.