Let's say you sit on ~2716.9 BTC. You have a scheme that'll cost you 26.9 BTC to shift the price. You "only" need the scheme to successfully increase the price of your remaining 2690 BTC by 1% to have recouped your cost. Any movement higher than that and you'll profit.

I'm not saying it's a good idea, but it's not unusual for pump-and-dump schemes to involve burning a lot of value to trigger the pump they're trying to profit off of. You need to treat the bit they're planning on dumping as separate from whatever capital they're prepared to invest to make the pump happen.