Imo you should just stick to hunting common jadinkos, it'll give you time to get the seeds you need as well as getting your head around herblore habitat. Red sallies are fast xp Pawyas/grens are slower xp but very good money, Pawya meat doesn't stack so you'd have to bank but if you use the meat to bait gren traps and catch them alongside then the spikes are stackable. Dunno how long it would take i'm not the best person who notices these things...or cares :P Happy hunting!