Tons of Questions

So I am considering getting into Votann as my 5th army, I started with tau, then tsons, then nids and most recently custodes.

So I like the streamlined look of the tau, to an extent, some models feel too streamlined.

Tsons are fun wizards but the trim can be a pain.

Both those armies lack any meaningful melee(excluding kroot which isnt terrible but nothing major) which I would like to have atleast some options for.

So I went for Nids who are basically only melee except for big guns but I also like shooting with lots of dice.

So I went for Custodes to get a tad bit more shooting and I found I really enjoy the more elite aspect but still wish they had a little more shooting.

So votann, I know essentially nothing about them but I know they are like 65% shooting from what im told which sounds nice. I also really like their look, some streamline but still with some heft.

But thatd enough about me lets get to the Questions:

1: How Pricey is the army generally, like we talking Nids high or Custodes low, or maybe Tsons Average?

2: How are colors decided, so I mostly see orange, white or a dark cyan. Now obviously I can paint them however I want but I am curious if there are any particular lore reasons why certain colors are what, like how tau have seats, nids have hive fleets, and so on. I mainly ask cause I like the idea of yellow kin, but I havent seen any.

3: how do you paint the visors(just metallics?) And what about the glass on the vehicles? Its transparent so is that a dedicated piece or what.

4: are they actually elite, from everything ive seen it seems like they are the most elite shooting army, baring maybe some space marine faction but I dont really want to get into marines. And knights dont count as "elite" imo

5: Do they have multiple playstyles? Such as could you focus on melee or ranged, focus in vehicles or infantry, killing or scoring etc.

Thats all I can think of off the top of my head. But as a bonus question feel free to sell me on why you like Votann.