in this article at gb.zinio.com/page/;jsessionid=AE9444B2B1801211B406AC1873FE5724.prd-main-news5?issue=416170010&pg=57&categoryId=cat1960028& acf=PG
and other spots it is suggested both the SB US and JP SLW are GREAT at planing early AND for heavyweights
in that article it says - donut worry about which one planes first - just get one and plane
some people prefer the JP SLW 92 for length
others prefer the SB US for speed and over the JP SLW since that fin is too "soft"
so, yeah - go for it