Hi, Long time Lurker here

I've been playing the Prowess version for the past 3 months, with decent succes at my local legacy weekly.
My current list looks like this:

4 Swiftspear
4 Delver
3 Stormchaser
2 Bedlam Reveler

4 Fow
4 Daze
4 Bolt
4 Brainstorm
4 Ponder
4 Git Probe
3 Chain Lightning
2 Price of Progress
1 Vapor Snag
1 Fireblast

16 Lands

Sideboard:

2 Pyroblast
2 Flusterstorm
2 Smash to smithereens
2 Surgical extraction
1 Hydroblast
1 Sulfuric Vortex (Card is freaking awesome, but expensive)
1 Grim Lavamancer
1 Price of Progress
2 Rough// Tumble
1 Vapor Snag


I have some questions, on how to Sideboard. I usually find myself wanting to bring in a lot of Cards, in each matchup, but not knowing what to cut.
The best example would be Abzan Maverick. The Cards I want in this matchup are:

+1 Grim Lavamancer
+2 Rough// Tumble
+1 Sulfuric Vortex
+1 Vapor Snag
+2 Smash to Smithereens
+1 Price of Progress

But what do I cut for them?
I usually cut 4 Fow against fair decks, but im very afraid of the Postboard Choke. I dont wanna cut any removal (obviously), Price of Progress is good, Bedlam is also good, cuz the games tend to go a little longer, Daze is nice aswell, especially if they Keep a one Land Deathrite hand. Im pretty lost on this, and would like some help.

Another strange matchup, that I run into fairly often at my local, is Pox. I have absolutley no idea, how to board against that deck, any advice?

What are the Cards you are most likley to trim in any given match?

The most common decks I face on a weekly Basis are:

SnS
Abzan Maverick
TES
Grixis Pyro (Bedlam Reveler insetad of Angler)
Pox
Elves
Punishing Dack/Thieves
Some Chalice Deck (Changes alot. I've seen everything from Eldrazi or Moon Stompy, to Aggro Loam and Bomberman)

Do you guys think that my Sideboard is reasonable for this Meta, or would you make drastic changes to it?