either will work, it is always a toss up as to whether or not a hen will adopt other chicks though... if for some reason the chicks are delayed in transit and you get them as 3 day olds instead of 1 day olds they will be harder to graft, though it may still work. If you decide to wait just make sure you keep her well fed and watch her weight and body condition, and have an alternative brooder set up in case she doesn't take the chicks, or if they don't take to her for some reason (that can happen also)
as far as hatching eggs... (always my preference if given a choice)... I don't know what part of Ohio you are from but you may be able to go directly to a hatchery to get eggs if you want. Or go to the Ohio thread here on BYC and find someone close to you with a breed you are interested in and arrange to get eggs either direct from them or shipped if need be.
I know of one breeder on the PA/Ohio line who often has a variety of eggs available, though they are show and heritage lines, so expect to pay $20/dozen.
Also, check your local Craigs list and check at your local Tractor supply store or feed mill, they are often familiar with folks who have chickens locally so you may find a source for fertile eggs in your area although breed choices may be more limited I have to admit I have always had a soft spot for good old farmyard mutts, and for a first time broody you may like that they are often more hardy and vigorous as chicks too.