Well, I would not go for lizard, thats for sure. Dwars is also suboptimal.
Humans are very good for crit+init as you say and elf are very very good for their flesh eating ability (which gives you some xtra xp, allows you to solve some quests more easily and gains you free skillbook -which is not that good as it sounds), but their main advantage is flesh sacrifice - 1 extra ap and 10% damage boost, for cost of 1 point of most useless attribute
And that extra AP can help a lot, because its for instance free cast of haste at turn 1, which in addition gives you 2 extra AP over your next two turns + movespeed.
Buuuuuut I guess thats really upto you, both of these are really good, one for init+crit, other for that flesh sacrifice, so go for the one you like more I guess
For bows and crossbows - I think crossbows are clear winners here, simply more damage. That movement penalty is not that important, as you will have two teleports and scoundrel + pawn+good boots compensate for that easily.
