yeas a good line wrench will save you from having to cut lines and use a socket or use vise grips.
id also buy a decent small dia line cutter...look for the classic/old school type...a smallish chrome one with a black knob and a replaceable cutter disc typically
yup double flare tool (some places will have the bubble flare tool just just ask) but you only do the first portion of the operation than snug em home by tightening, loosen, tighten, loosen then final tighten (dont go overboard on the tightness) youll notice you can get more of a turn on the wrench each time till the last time....dont forget to put the line nut on BEFORE flaring
btw the 25' may or may not be enough to do both rear circuits but it sure aint doing them all....that passenger rear line is looooong...though you8r more than able to "take shortcuts" just keep em away from moving parts and slit the side of the some 3/16ths vac hose to slip over the line where it might rub or it gets ziptied to the oem lines or other parts (leaving the oem lines in place and cutting or bending back the ends that are in your way lets you attach to em easy)
have fun, wear safety glasses....or if you dont have those just cutup a water bottle and tape it over your eye's