I think the advice given about just leaving it be and going with what you have is solid. Now, believe me, and these guys can attest, I am the least patient guy in the world. When I first started if my beers missed the OG and FG numbers by even two or three points I was pissed. The last year or so I have decided that I am not going to sweat that. If it is only 2.7% then so be it. Drink it and see what happens. You can always add a bit more of this or that to up the percentage if you want, but you will never know what your baseline is until you just leave it be and let it do it's thing. I have left my beers in the plastic bucket fermenters for upwards of three weeks before I dry hopped and schedule lined up so I could keg it. Did it hurt the beer? Hell if I know. Was the beer good? Was to me and my neighbor who is my taste tester. So, I think you are worrying way too much about the numbers and all the stuff that you cannot change at this point anyway. Let it ride for a week or so, bottle it, let it ride another week or two then put one in the fridge and see what you got. Hell, it could be the next big thing, that's how the guys at the craft breweries out here got started. Just my opinion, and take it for what it is worth as I am no pro. Enjoy.