Yes down the flanks with 4-5-1v but I only do that when either they play 3 CBs or they have a good DMC.

4-4-2 should work fine but play mixed passing.

I'd suggest not playing long down the flanks as a. With 2 each on the flanks the ball will be intercepted more. b. It'll lead to more counters and with 3 strikers can be dangerous.

Use long passes when a weakness can be exploited or when you are desperate to score.