I have the opportunity to take

JFK-MUC-TLV in F/C with a 1:10 connection time; A346 to A343 (never been on the 340)

or

JFK-FRA-TLV in C with a 4:30 connection; A388 to 744 (First time on the A388)

(1) Is 1:10 enough time to connect in MUC? (I've never been!)

(2) Will I have enough time to grab a shower in MUC?

(3) Is it worth the extra miles (I think 30K?) for F over C (vs. not being on the A388)?

(4) Do I have to re-clear any sort of security for TLV?