I'm new to the forum

My husband is in the process of applying for a uk spouse visa with me being the sponsor. I'm currently working in the uk and will be applying under Cat A, non-salaried employment as I get paid by the hour. However I have a few questions:
1) I have two payslips in december (as opposed to one - i get paid monthly). This is because my employee number changed in december. So for the month of dec, i have two payslips with different employee numbers, although every other detail remains the same. Can I still use the two payslips coz if I add up the incomes, they meet the threshold for the month?
Please note that the payslips are from the same employer.
2) My bank statements are still in my maiden name. Can I use them as they are so long as my marriage certificate is also in the documents?
Thank you all for your response