Thanks for the help, everyone. I transplanted my corn seedlings yesterday, condensing 8 rows down to 3 rows because of poor germination (old seeds, too much rain). I think it went real well as 24 hours later none of the seedlings have wilted. Now I hope they'll take off and grow and not be stunted from the move.
I'll be seeding the other 5 rows with another Se corn variety tomorrow. I've got fresh seeds and there's little rain in our forecast, so germination should be OK this time.