Divorce - Guidance Required - Father Needs Assistance

I am a British Expat (Dubai Resident) who was married to a French Expat (Bahrain Resident).  We undertook an agreement for divorce, the highlight - we agreed sums I would pay (what is due, and what would be Alimony and me covering my son's full expenses).

I am now seeking a leading lawyer or feedback from this community related to:

a) her changing her mind and coming after damages (is this allowed by Bahrain Family Law)
b) if the courts in Bahrain can be manipulated (as her lawyers/friends/clients are not only well networked but sit in a position of power in Bahrain.
c) are the courts fair?
d) she had restricted access to my son, how can I win custody or at least fair access
e) She was married before and waived many elements to secure custody of her children, i, however, am paying a disproportionate amount compared to her previous deal - can her last agreement can be compared to my agreement

Please note I will relocate to Bahrain and rebuild my life if that secures my son's custody.

I had decided to do the right thing and support my ex, agree to her terms and be the father I want to be, but am now considering alternative action as I feel my son will not be better off without me in his life.  A son should have a strong bond with his father, despite their parent's relationship.

If anyone has been through a case in Bahrain similar, or understand how  Ministers or Royal Famly members can influence a personal matter like this. 

I hope my ex and I can sort things out reasonably and calmly but am conscious that I need to appropriately prepared for the interests of my son.

Thank you