Guess it depends on what the neighbors are saying
LOL
Sounds like there's enough pipe left to where there wouldn't be much of a back pressure problem. Is it past the muffler?
When I switched the headers on mine, the pipe was too short, so I slapped them both on and ran 50 miles to the muffler shop. Talk about turnin some heads!
If it gets annoying after a while, could probably run up a and get an extension or something and slap it on till you get your new pipes.