Err to be honest based on my previous company tourney format we start the premier drivers not only at the back but at least 3 kart space behind.
After each race the drivers will be ranked then after and adjusted accordingly.
Both you and jeff reminds me of the special go kart race whereby M.Schu and Barrichello raced against local karters many years ago.
they were both in shorts and t-shirts and started way at the back. By the second lap they took the lead. At the end of the race at the finishing line they were so far ahead they actually did a tandem 360 going into the finishing line