I am booking flights to Europe on two different tickets. On the way back, I will fly from Vienna to CDG (via. Air France) and from CDG to the US (via. Delta). Since they are on two seperate tickets, I'd need to recheck in when I get to CDG (I think). I am thinking of booking the tickets so that I arrive in CDG at 9:30 and leave at 1:35. Another option is to pay more $$ and leave later.
Do people familliar with CDG think the first option is feasible?