I'm not sure why those are the only 2 options. Obviuosly the best option would be to not acquire Rex Grossamn in the first place, but maybe a 3rd option is getting a decent QB via FA or a trade that does not require so many top picks.
I agree with the person who said that if they were one piece away this makes MORE sense. Either way, I can see what the fans are excited about, RG3 can be huge and Rex sets the bar pretty low. Godd Luck.