m7 clutching help with gear swap

[lakefx7]

i just installed 55/65 gears in a 06 m7 153. has anyone ran these gears around 8000+ alt.? just looking for a starting point as far as weight/spring helix combos people would recommend. I only run at this alt. once a year so not looking to spend a ton (adjustable weights are out of the question) thanks in advance.

 

[2500hd]

my brother "vern" runs that gearing in his 06 m7 at the same altitude i belive his primary is stock yellow white with 67g weights secondary is a shift assist and a speedwerx black orange spring stock helix. and it rips. pm him he could tell you more.