3rd edition army, help me update it plz

OK heres my Army:

HQ
Brother Chaplain Varus
[1] Chaplain
+Jump Packs
+Artificer Armour
+Teleport Homer
+Terminator Honours
=130

HQ
Librarian Hokar
[1] Librarian
+Terminator Armour
+Force Weapon
+Storm Bolter
+Iron Halo
=155

Elites
Dark Flames Terminator Squad
[9] Terminators
+[2] Assault Cannons
+[9] Chainfist
=463

Elites
Light Flames Terminator Squad
[9] Terminators
+[2] Assault Cannons
+[9] Chainfist
=463

Elites
Revered Brother Charnus
[1] Dreadnaught
+Twin Linked Lascannon
+Heavy Flamer
+Krak Missle Launcher
+Extra Armour
+Smokelauncher
=153

Troops
[6] Space Marines
+[1] Lascannon
+[1] Meltagun
=115

Troops
[6] Space Marines
+ [1] Lascannon
+ [1] Meltagun
=115

Troops
[6] Space Marines
+ [1] Lascannon
+ [1] Meltagun
=115

Troops
[6] Space Marines
+ [1] Lascannon
+ [1] Multimelta
=115

Troops
Scout Squad Alpha
[5] Space Marine Scouts
+ [5] Sniper Rifle
=90

Troops
Scout Squad Beta
[5] Space Marine Scouts
+ [5] Sniper Rifle
=90

Fast Attack
Wings of the Dragon
[9] Space Marine
+Melta Bombs
=261

Heavy Support
Devestator Squad Alpha
[5] Space Marine
+ [4] Lascannon
=215

Heavy Support
Devestator Squad Beta
[5] Space Marine
+ [4] Lascannon
=215

Heavy Support
Devestator Squad Omega
[5] Space Marine
+ [4] Missle Launcher
=155

Total Points=2850 Exactly

These Models are also first edition so they look weird, just a little FYI.

If anyone could help me to update this to 4th edition or give me hints on making it better that would be great! Also FYI I have no vehicles so I cant add what i dont have.