Query for Analytical method by calibration plot

Dear All,
The analytical methodology, which I’d developed is for determination of cleaning agent residues, in Swab samples. Basically the method is based on calibration plot, with known level of standards . Unknown analyte (concentration of cleaning agent in Swab sample) is directly quantitated from the regression equation [y =mx+b] derived from calibration plot.
If, Im proceeding on the strategy mentioned above
bWhat are the other Regression parameters(other than, Correlation coefficient [r2], Slope[m] & Intercept,for.Ex. Standard error, Coeffcient of variation Residual,…) I need to include as acceptance criteria ?
(2)What is timeline, I need to perform recalibration plot/curve?

Expecting your earlier replies/comments.