Dude, (for what it is worth) I am running a Meizhi 450w (200 true watts) which is "same shit different pile" to the Mars (except you have an extra 65w).
My 2 girls are flowering like crazy under it. I am sure there are better lights and I plan to build my own COB setup, but I would say let your plants finish under the Mars and see what happens. It is obvious to me that I am going to have some nice buds. Running out and spending money for a light to finish that batch is not necessary, IMO. Although, I'm growing photos, not autos.