Credit cards for purchasing materials

[Ray S.]

I need to purchase a lot of finishes for a job. I want to get a credit card that can offer the best rewards for what/where I'll be spending (i.e home depot, ect). Right now I'm just using a cash card, which offers nothing. I know it's not much, but better than nothing since I have to pay for it someway. Any suggestions? 

Also, are there any cards that will let me hold a high balance and pay it off over 6 months for instance with very low interest rates? I have the money, but I figure I'll save it until the job is done just in case and hold a credit card balance until then.