This is actually surprisingly difficult to answer. You need to remember that the show needs to treat every episode like someone is watching for the very first time or at an irregular interval, so you need to have the more popular games rear their heads fairly often (which is why we see Plinko, Cliff Hangers, Lucky Seven, etc. at such frequency).
If pressed, I would have something like this (and not necessarily these games, but similar games to match the format).
1.) Lucky Seven (car game to kick things off with a bang)
2.) Race Game (fast-paced timed game to keep the excitement up)
3.) Vend-O-Price (fee game for sure, but something slightly lower in energy/slower in pace to have as a contrast)
4.) 1 Right Price (quickie 4th out of necessity, and I like it slotted here over 6th)
5.) 10 Chances (some sort of car game with other prizes attached fifth)
6.) Plinko (cash 6th, because I always liked the "well we almost ran out of prizes, so we need to offer this" schtick)
Timing notwithstanding, I think that flow works best for an enjoyable show. You can mix and match game particulars as you see fit.
