lol, then the hard part is already accomplished.
Without a broody, it is the need to maintain some high heat for the first few weeks and to prevent the chicks from drowning in a waterer that is too deep or too big. Traditionally, thats a heat lamp, or the
brinsea brooder - I won one in a byc contest and used it last spring for three little legbar chicks, of which two have died from mareks. (getting off the point here). I really really liked the
brinsea mostly because it removed worries of fire danger.
Without a broody, I would say the best thing I ever learned was to provide the chicks with a plug from your lawn. A new plug needed daily. That gives them grit, soil microbes, greens, bugs especially if you are selective about the plug , choosing one with clover/dandelion or such in it. It is amazing how much dirt and greens the chicks can consume in a day. Next day, replace "used" plug and provide a fresh plug. Lawn recovers pretty well. Of course this assumes you do not use herbicided/pesticides/fertilizers on your lawn.
I've raised dozens of batches of chicks without a broody, and only one with a broody (last spring). Broody is soo much easier, plus the chicks learn to be much better foragers than the chicks raised without a momma hen. Could be that she has them out and about much earlier....