Strings are cheap, get a Dacron and try it, you'll never know until you do. If your worried about speed you shouldn't be shooting that curve. Sounds like your not, you'll get lots of advice here, some good, some not so much, you'll just have to sift through it and decide for yourself.
Go back and look at the picture of Ron W., that old codger has been shooting a bow longer than most of these guys have lived. When someone like that gives you some advice you can take it to the bank.
R. W.