Okay, lets see.. Cohorts - How's about we assume they're Marked as well, just for simplicity's sake?
As for Cohort Creation, we'll use 30 point buy. You can supplement their equipment with your own money. HP = Full at first, half+1 after that. particular's are up to you.
Keep in mind, however, 2 things - Your cohort is max TWO levels below you, not 1. Also, HD does not equal level equivalent for Cohorts. For example I haven't seen Salamander listed anywhere as a special cohort, and the noble variety doesn't have a level adjustment.. However, I'ld be ok with a 22 HD Noble Salamander (+6 LA) as a Cohort.
Any god you want to worship is available, and there are multiple gods with overlapping fields. The base PHB dieties are all there, and there's allways the 'worshipping an ideal' concept, so long as the ideal fits both/all chosen domains.
Voidrazor - I don't really like that Choose Destiny spell, it's just one of those things that sends shiver's up my spine and I don't know why.. I'll allow it on a trial basis if you promise not to make it Persistant/Permanent somehow. Otherwise Destiny Domain looks good.
Avalon - Dragonwrought is allright, I just don't like the aging b/c I've seen/heard numerous people claim that Old Dragonwrought Kobolds are eligible for Epic feats b/c they're considered true dragons and have the 12 dragon age category's, and at Old Age, dragons can choose Epic Feats in place of normal ones. Essentially, if you play a 100 year old Kobold, by level 10, he could have Combat Archery, Damage Reduction, Dire Charge, Energy Resistance, Epic Speed, Fast Heal, etc, etc. Just don't do that and it's fine.