with all of these great new ways to manufacture spend...how much have you all pushed it?

I have about 16000 of credit with Chase. If I spent 5k a month on "manufactured spend" items (Amex Gift Cards, VRs) amongst all of my normal day to day spend (another 1k or so a month) would that put me at risk of account closure? I pay my bills in full either early or by the due date every month and my credit score is just north of 800.