I had a poll on the Warhammer40k Subreddit to see what army I should start collecting out of 5 options. Orks finished 2nd to Necrons by 1 vote but then I realized I didn't vote so I tied it and chose Orks

. So this is my first army list attempt and I would love for all the Big Meks in this subreddit to give me advice on how to fix the 1 point issue I have (It's triggering me) and any advice to make the list better.
++ Vanguard Detachment -3CP (Orks) [79 PL, -5CP, 1,508pts] ++
+ Configuration +
Clan Kultur / Specialist Mobs: Deathskulls
Detachment Command Cost [-3CP]
+ HQ +
Warboss [4 PL, -1CP, 83pts]: Attack Squig, Brutal but Kunnin, Da Biggest Boss, Da Killa Klaw, Kustom Shoota, Power Klaw, Warlord
+ Elites +
Kommandos [3 PL, 50pts]: Tankbusta Bombs
. Boss Nob: Big Choppa
. 4x Kommando: 4x Choppa, 4x Slugga, 4x Stikkbombs
Kommandos [3 PL, 50pts]: Tankbusta Bombs
. Boss Nob: Big Choppa
. 4x Kommando: 4x Choppa, 4x Slugga, 4x Stikkbombs
Meganobz [10 PL, 200pts]
. Boss Meganob w/ Saws: Killsaws (Pair)
. Meganob w/ Saws: Killsaws (Pair)
. Meganob w/ Saws: Killsaws (Pair)
. Meganob w/ Saws: Killsaws (Pair)
. Meganob w/ Saws: Killsaws (Pair)
Meganobz [10 PL, 200pts]
. Boss Meganob w/ Saws: Killsaws (Pair)
. Meganob w/ Saws: Killsaws (Pair)
. Meganob w/ Saws: Killsaws (Pair)
. Meganob w/ Saws: Killsaws (Pair)
. Meganob w/ Saws: Killsaws (Pair)
Tankbustas [8 PL, 170pts]
. Boss Nob: Rokkit Launcha
. 9x Tankbusta: 9x Rokkit Launcha, 9x Stikkbombs, 9x Tankbusta Bombs
Tankbustas [8 PL, 170pts]
. Boss Nob: Rokkit Launcha
. 9x Tankbusta: 9x Rokkit Launcha, 9x Stikkbombs, 9x Tankbusta Bombs
+ Fast Attack +
Stormboyz [3 PL, 60pts]
. Boss Nob: Choppa, Choppa
. 4x Stormboy: 4x Choppa, 4x Slugga, 4x Stikkbombs
Stormboyz [3 PL, 60pts]
. Boss Nob: Choppa, Choppa
. 4x Stormboy: 4x Choppa, 4x Slugga, 4x Stikkbombs
+ Heavy Support +
Battlewagon [9 PL, -1CP, 155pts]: 'ard Case, Deff Rolla
. Kustom Job: Forktress
Bonebreaka [10 PL, 180pts]: Deff Rolla
+ Dedicated Transport +
Trukk [4 PL, 65pts]: Big Shoota
Trukk [4 PL, 65pts]: Big Shoota
++ Patrol Detachment -2CP (Orks) [22 PL, 8CP, 483pts] ++
+ Configuration +
Battle Size [12CP]: 3. Strike Force (101-200 Total
PL / 1001-2000 Points)
Clan Kultur / Specialist Mobs: Deathskulls
Detachment Command Cost [-2CP]
+ Stratagems +
Extra Gubbins (1/3 CP) [-1CP]: 1 Extra Shiny Gubbins
+ HQ +
Warboss [4 PL, 83pts]: Attack Squig, Kustom Shoota, Power Klaw, Super Cybork Body
+ Troops +
Gretchin [2 PL, 50pts]
. 10x Gretchin: 10x Grot Blaster
+ Elites +
Painboy [3 PL, 65pts]: Power Klaw
Painboy [3 PL, 65pts]: Power Klaw
+ Fast Attack +
Megatrakk Scrapjet [10 PL, -1CP, 220pts]
. Kustom Job: Korkscrew
. Megatrakk Scrapjet: 2x Twin Big Shoota
. Megatrakk Scrapjet: 2x Twin Big Shoota
++ Total: [101 PL, 3CP, 1,991pts] ++
Created with Battlescribe
So the plan is simple, the two Warboss characters, Painboys, and Mega Nobz ride in the Battle Wagons and push up the board to the center part of the board / advance if needed. Tank Bustas are in the Trukks doing drive-bys. The Kommandos and Stormboyz come in to secure / contest objectives Round 2 or later. The Grotz sit back, hide, and hold the safest rear objective. The Megatrakk Scrapjets I assume probably would push up and slow down enemy progress on one of the side boards (not too sure how to play them
lol).
I chose Deathskulls because I like Elites /
FA infantry more than boyz and their Kulture works best for my model preferences.
Any advice will be greatly appreciated and I haven't played since 7th edition (kind of quit after
GW axed both of my starter armies codices in 7th, Black Templars and Khorne Daemonkin). Hopefully me buying Orks won't do the same
lol (and sorry if it does
lol)
Last question, when does one know to make the plural of an ork unit an S or a Z?