I'm going to replace the propane lines on our van when replacing our
propane tank.  I'm familiar with the basics of bending and flaring the
tubing.

Can I easily do this without removing any of the interior of the kitchen?
(That was all taken out and serviced in the not-too-distant past.)

My plan was:
1) cut the previous lines by the tee fitting outside the van, and remove
them from the interior.
2) make new lines using the old ones as guides.  Leave an extra length at
the bottom of each.
3) Refit them through the interior.
4) Add the outside bend to each line and attach to the tee.

Will this work without removing any of the kitchen?

Thanks!
Wes