We do not disagree about the value of a QB in this format. Where we disagree is in the value of a bad QB.
Well I'd recommend trading for a QB you actually like at least a bit. Point is a starting NFL QB is going to cost more then you would like and for sure more then seem willing to pay.
Yes you can afford to limp along with a poor QB with your huge lead if you wish, but your still going to have find a QB to plug in since you risked waiting for Foles to recover and now your caught with your pants down. That's going to cost you more then you like I think.