installing inverter breaker

Hey all, just got my 50a breaker for the inverter yesterday and now want to install it into the existing, up and running system. Is there a preferred way to do this with what needs to be disconnected in what order, or would I be fine with just disconnecting the positive leads from the battery? This is a competely off grid system.
Comments
Off grid, pv and any charging first then battery. bring back up the opposite way with the battery first.
My oppinion.
gww
Tell us more about the 'system'... any pics? It's hard to advise on what we cant see
KID #51B 4s 140W to 24V 900Ah C&D AGM
CL#29032 FW 2126/ 2073/ 2133 175A E-Panel WBjr, 3 x 4s 140W to 24V 900Ah C&D AGM
Cotek ST1500W 24V Inverter,OmniCharge 3024,
2 x Cisco WRT54GL i/c DD-WRT Rtr & Bridge,
Eu3/2/1000i Gens, 1680W & E-Panel/WBjr to come, CL #647 asleep
West Chilcotin, BC, Canada