Best Way to Refine Level 3 and 4 Weapons?

[Menace651]

Trying to +9 some level 3 and 4 weapons. What's the best way to go about it? Should I use WS to +7 and then enriched Oridecons or E.Oridecons to +7 and then WS to +9? Or just Enriched Oridecons all the way to +9 for BG weapons?

It seems +5~+7 would be better off getting a double roll from the enriched oridecons than +8~+9 since it's a higher chance and +8~+9 would benefit more from a +10% success rate from job lvl 70 WS.