So it looks like Saves, Skills, Feats, and Equipment you are unsure about, yes?
Saves are pretty easy: First, you look at the saves listed under Rogue 20 and write those down. Then you look at the saves listed for Lasher 10 and add those to the ones you've written down. Then you need to find out what the saves are for the racial hit dice of the Draegloth. Is its type Abberation or a Monstrous Humanoid?
Your skills will depend on your class. I would recommend figuring out how many skill points you get for the Draegloth racial hit dice, which skills are class skills for a Draegloth, and spend those. Then do the same for your rogue levels. Then do the same for your lasher levels.
You look like you have a pretty decent handle on what feats you want. You get one feat for every 3 Hit Dice you have, plus one at your first hit dice. Sp, if Draegloth is a 6 Hit Die creature and you have 30 class levels, you have 36 hit dice. This means that you get (1 feat for your first hit die, +1 for every 3 hit dice) = 13 feats. Your Rogue levels give you proficiency with Whips for free.
The only recommendation I can give you for equipment would be to get yourself a Save boosting item. With that penalty to Wisdom and no classes that give you a good will save, you are going to fall prey to Will save spells pretty regularly.