Got Orks?

While participating in Egypt Wars I this past weekend I reconnected with some guys that I haven't played 40k with/against in five years. While sharing war stories, I mentioned the fact that I would likely be playing a few games at the local store (not as pleasant as it may sound. There's a reason I haven't played there in years...) to get some further use from my Salamanders since I, and others, put so much work into it. The words were barely out of my mouth before the gauntlet was dropped. Someone called "dibs" on my first game back and it was settled that I would be playing 3000 points of Orks. Thinking to my self: "Self you've got 4000 points, this shouldn't be a problem, right?" Right? Right. Making an army for four players at that point level is fantastic. Translating that into a single force org chart game at elevated points isn't all that easy, especially since those are the only models I currently own. My list:

190 Vulkan
145 Terminator Chaplain with Melta Bombs & Digital Weapons
165 Ironclad Dreadnought with (2) Heavy Flamers & Assault Launchers
165 Ironclad Dreadnought with (2) Heavy Flamers & Assault Launchers
460 (3) TH/SS Assault Terminators with Land Raider Crusader & Multi-Melta
215 Tac Squad with Combi-Melta, Multi-Melta, Flamer & Rhino
215 Tac Squad with Combi-Melta, Multi-Melta, Flamer & Rhino
215 Tac Squad with Combi-Melta, Multi-Melta, Flamer & Rhino
215 Tac Squad with Combi-Melta, Multi-Melta, Flamer & Rhino
215 Tac Squad with Lascannon, Flamer & Rhino
215 Tac Squad with Lascannon, Flamer & Rhino
70 Land Speeder with Multi-Melta & Heavy Flamer
70 Land Speeder with Multi-Melta & Heavy Flamer
125 Vindicator with Siege Shield
100 Thunderfire Cannon
85 Predator Destructor with Autocannon & Heavy Bolter Sponsons
135 Extra Armor for all Rhinos, the Vindicator, & the Land Raider

I'll be proxying my standard dreads as Ironclads. I debated putting in another Predator, but the templates from the Thunderfire Cannon appeal to me more than the extra dakka from the Predator. I suppose I could proxy my infantry heavy weapons as Heavy Bolters, but I just don't "feel" it. I don't want to completely tailor my list even though I'm a bit intimidated by the number of greenskins I'm expecting at this points level. I'll let ya'll know how it goes.