"A" is pretty spot on with what he said, not sure I could add much.
As "A" said, I'd put the side edges at 3 degree lickity split. You'll likely notice a significant improvement and wonder why you didn't do it sooner. As for having the base ground and the base bevel set to .5, that would be a BIG change. Not so much because it requires a grind but going from a 1 degree base bevel, that's assuming your's really are at a 1 degree and I say that because it wouldn't surprise me if they actually were a little more than a 1 degree and I'll touch on this more later, to a .5 is a big change as far as how the ski reacts.
Not everyone benefits from a .5 base bevel. It tends to truly benefit physically stronger skiers. Now before anyone jumps all over me for saying that, I am not suggesting in anyway that anyone who doesn't ski a .5 is weak or is a wimp but a .5 is an aggressive tune and if you aren't physically capable of taking advantage of the aggressive nature of a .5 tune, then you could/would likely be faster with a .75-1 on the base. The shallower the base bevel the less forgiving it will be and with an aggressive tune you need to ski strong and be aggressive or the ski will end up skiing you.
Also, after a fresh base grind, unless you want to spend the time soaking the bases with multiple wax/scrape/brush cycles, have them hot boxed a couple times. If you're familiar with the Swix line, have them hot boxed with a 99 then a 88 or you can do two 88 sessions or a 88 then 77 but I wouldn't start with anything harder than a 88 as my first wax. If your a Dominator wax line user they have a great base prep wax too. Whichever base prep you use, this is one time when more is better. And remember, fresh ground skis are slow, not so much because of their lack of wax but because the structure is still sharp and aggressive. That's why we do so many wax/scrape/brush cycles, it helps mellow out the structure and always get as many runs on new skis as you can, the more it's skied the faster the ski gets, especially speed skis.
Sooo, get a 3 degree on those side edges today and finish out the year. Then next year as part of your preseason prep, have a fresh grind to get everything nice and flat again and back to zero, then have a .5 bevel cut into the base and a 3 degree put on the side. Get them hot boxed a couple times with a good base prep way. Get them home and wax/scrape/brush them more with a progression of wax hardness from softer to harder. Then depending on how "preseason" this takes place, after you've done multiple wax/scrape/brush cycles put a coat of wax on them, sit em in the rack and go to bed, say your prayers and ask the big guy up above if he'll send a text or tweet to Mother Nature for some early season snow and spend the rest of your time dreaming of snow flakes and glistening white slopes filled with red and blue gates setup in GS courses.