If I figure right that would be monday at noon California eBay time? I would go 7-8 seconds (personal choice). Should not matter much how many items you snipe at the same time as long as they are NOT in a bid group. (since you want to win them all, they shouldn't be)
to the forum, and Good Luck.
Maybe someone else will pop in and give their 2 cents too. Let us know what you decide and how it works?