Just got a CZ P07 today.
Now I need a few extra mags and an IWB light bearing holster that works with a Viridian C5L.
Where can I find what I need at the best price?
And pic of my new handgun:

Bump for day crew

White hat holsters can make you what you're looking for.

I ordered their MaxTuck yesterday.

I just ordered a couple kydex iwb holsters (for my CZ 75 Compacts) from the Cleveland Kydex Co.

It appears they make holsters (couple different styles available) for the P07 with the light you have.

cleveland kydex custom-light-bearing-holster-clip-iwb

Magazines are expensive.  Right now it seems you have to pay the price for a magazine that has CZ stamped on it.  Either

Greg Cote LLC

P07 15 round magazine

P10C magazines - I keep reading that these also fit P07's but I've not ordered any to see, confirm before ordering

P10C magazine with a 2 round extension on the bottom - again, confirm they fit/work with the P07 before ordering

CZ USA would also be a source for P07 magazines and they'll be the same price or more than Greg Cote LLC charges (and shipping will probably be slower, in my experience).

I like the Crossbreed Supertuck styled holsters when I carry IWB.
An all kydex holster wouldn't be as comfortable, at least not for me.
I'd go all kydex for an OWB holster.
As for mags, I just received 2 for the PC 10 C 17 rounders (15rd w/+2 base adapter).
It is the same mag as my 15 rounders that came with my P07. 
Get the PC 10 C mags since they are around $10-$12 cheaper. 

ETA: I ordered from Greg Cote LLC too. Got them in 2 days! But it is confirmed, the P10C mags are the same as the new P07 mags. I'll post pics either this evening or tomorrow.

As said get the P10c mags.
Look at KT Mech for a holster.

Got a Sig 226 or 229 (not 229-1)?

Those mags work. Just don't lock the slide back.

Interesting.

CZ75 mags work too, just don't fit flush.  

What your P07 really wants is upgrades from Cajun Gunworks.