I have several one time only expenses - less than $100 at Home Depot, need to buy stuff at Target, Costco and Bed, Bath, Beyond. Totally it would be less than $600 for sure.

What would be the best return if I have Chase Ink and Sapphire? Buy $500 visa gift card at office depot and use it to purchase stuff at all places except Costco. For Amex spefic expenses, get VR at CVS using the visa/mc gift card and load BB with funds which then use it at Costco.

Any problem with the plan above?