I wanted to ask about common-law and employment.What are you on about??
Stating an intention to apply for sponsorship does NOT make a person inadmissible.
Common-law relationships are NOT hard to prove. It is no different than a married app except submitting the proof of cohabitation.
Paying the fees ahead of time can most certainly changes things. It shows CBSA that a couple is serious about applying for PR and that they are following the process to legally live in Canada.
1. I have our common-law relationship attested by a notary in February 2017 in the UK. Is it going to be usable as a proof of our common-law for the purpose of inland sponsorship when I file in December/January?
2. I have no job so far as of yet. However I am a freelancer and have a contract signed with one agency. Is it going to pose any problems to my application?
3. Our medicals are good until midst of March 2018. Again, they have been done in the UK. Can I use them when I file my application before March 2018?