UK Family visitor visa refused due to lack of ties. What can I do now?

I was refused family visit visa early May (my first ever uk visa application) because of the reasons in the refusal letter. It was my first application and i made some silly mistakes that contributed to my refusal. So, the refusal was somehow justified. I, however, want to reapply given that my circumstances have changed considerably in the last 4 months. Please what are my chances of getting the visa.

1. The ECO did not believe that my relationship with my wife (she has ILR) is genuine and subsisting. In addition, he said he didn't believe I'm related to my 1 year old daughter (British Citizen) as claimed. They are both resident in the UK. Her last visit was in Oct. 2014 and she left in Jan. 2015. We both attended the same University. So our relationship is not in doubt.

2. Earlier this year, due to a drop in company revenue, salary was paid in half and the balance at a later date. So, the ECO took advantage of this and said my job didn't qualify as home tie. Although I was the architect of my own downfall. I stated the salary thing in my cover letter! Unbelievable. I thought I was being sincere.

I now want to reapply again to visit my wife and daughter.

I will be addressing the refusal points with:

1. I have asked my wife to send our marriage certificate and our daughter's birth certificate. I will also add her flight tickets, a few wedding pictures and Skype call logs as proof of relationship.

2. Things have since normalised at the office and salary is now paid in full.

3. I will now be visiting for 18days.

Please, do i stand a chance of getting the visa? Is there anything i can add to increase my chances?

Also, can i use priority for the visa processing?

Update!!!

I later applied for a spouse visa in November of the year I posted this question and it was approved. I have since moved to the UK.