Hi there Aiden, welcome.
I can almost feel your frustration and anxiety.
This forum has many experienced members who have actually done just what you are seeking to do.
Firstly, I agree with Graham. From the detailed information you have supplied I can see no problems or major issues at all.
I'm pretty sure you have made a very extensive review of requirements, so if I duplicate please accept my apology.
Here is some info from UKBA that SHOULD explain everything that is required to be compliant for settlement:-
http://www.ukvisas.gov.uk/en/ecg/settlement/children
This should answer your questions, but please take a review of the above link and ask any questions you feel need clarification.
Please also consider the 'whole' application regarding spouse and children.
Can you comply with UKBA requirements for spouse and children in terms of financial standing and suitable accommodation?
I'm not wanting to be negative just want to help you think logically about the settlement process for ALL.
Plenty of us here will help you succeed and achieve your target step by step.
Please be patient with us each step of the way. There is a huge amount of experience here.
Here's some info for spouse visa requirements:-
http://filipinaroses.com/showthread....-A-quick-guide
Have a read ask more
God Bless