migration / upgrade from 16.2 (eole2.7.1) to debian/ubuntu lts recent

[dreal norm]

hello all,

( sorry for my english , i'm french  )

i'm under an french educ version of bareos based on eole 2.7.1 / ubuntu 18.04 x64

the eole version of bareos is 16.2 with a lot of bug and no rapid upgrade planned to 18.2/19.2

i want to migrate on an standard ubuntu server and upgrade bareos to the last stable version ( 18.2 / 19.2 if released )

i want to preserve all job done and tape archived 

i have a library  with 30 LTO6 tape and 1 drive

i actualy save 8 servers (Linux & Win ) and planned to add 2 big file server ( 9To )

the actual volume is 10 LTO tape at 2.5To  with full/diff/inc pool and planning

i have read all the docs of bareos but not find a real upgrade process

i have  few questions :

can i migrate from 16.2 directly to 18.2/19.2   ?

which linux version is the most adequate to bareos ?

can i migrate from mysql to posgres ?

i plan to process like this:

- save bareos dir 

- dump the db mysql

- install the linux server from scratch

- install bareos 16.2 on it with the 16.2 repository

- restore bareos dir

- restore the db

- test bareos ( the linux migration is done )

- change bareos repository/key

- apt-get update

is it the good way ?

thanks by advance

Pierre