[MENTION=870329]bklgafly[/MENTION]

You are not going to get reassurance regardless how many times and threads you asked about your scenario.

The thing is, Chase (or any other bank), use a model that gauge the "normal" consumer behaviors and flag accounts that dont fit such "normal" pattern. Then the banks simply kill the flagged accounts, often without human intervention.

The amount you described to spend, is a fairly large amount of $400K renovation project albeit spread over a year - it definitely not fits a "normal" spend pattern at Office Supply stores, regardless how many Ink Cash cards (4 or 6 per your other threads) you have to rotate from. Pretty high chance the accounts would be flagged if each of your Ink Cash is maxed out on the $25K annual 5x spend.

The key words in Chase T&Cs - are their cards being used as "intended". Chase certainly does not intend for cardholders to shift spend category via category bonus to maximize the earnings of the reward program (or in your case, to maximize your actual saving on real expenditure). The Ink cards are designed for Spend for business at the office supply stores, that do not take into consideration of GCs are readily available in those stores. If you know the history of the Ink cards, you would know the reasons behind why 1) OD stopped selling $500 cash equivalent, 2) Chase put a cap on the annual category bonus spend. That happened 3 years ago. Eventually Chase stopped offering Ink Bold, followed by Ink Plus, but leaves Ink Cash alone due to the annual cap is relatively "reasonable".
Understanding the history of how Ink cards had evolved, may help you to discover other, albeit less "lucrative" alternatives to save money on your expensive renovation project. there are several suggestions in the other thread you posted your questions. Worth to consider.

Saving money is a good thing especially 5% on $400K spend, but you would also need to weight on what you would potentially face from the bank's risk control model.