custom sub box help, 2 custom boxes ( 12" kicker comps) 1 fabricated box (12" alpine)

hi all, i started off with a single kicker 12" comp sub, ( come in a bundle with kicker gear ) running off a zx350.4 amp ( 150w x 2)


I recently felt the need for more bass, so i upgraded the kicker to a 12" alpine ( 300w) and bridged the kicker amp.

I made a custom face over the front and added a couple of sixes.


Now i have an idea of having two subs on angles.

That leads me to my new plans.

I want to have the alpine in one custom triangle 12" box on one side and buy another alpine and build an identical box for the other side.
Design:


These are the specs of the Subs that i am putting in.

Specifications
Dimensions

•Added Volume: 0.082 cu. ft. (Reverse Mount, Magnet Out)
•Displacement: 0.084 cu. ft. (Front Mount)
•Mounting Diameter: 289 mm (11.4^^)
•Mounting Depth: 127 mm(5^^)

Power Handling

•Peak Power Handling: 900 Watts
•RMS Power Handling: 300 Watts
•Power Range: 50 - 300 Watts

General

•Frequency Response: 27Hz - 700Hz



I was going to make the box around

500-600mm deep x 500-600mm wide x 800mm ( on angled face where sub goes) x 400-500mm high

The internal dimensions come to around 1.8 - 2.2 cubic feet ( depending on dimesnion used )

Can anyone tell me if this would be good enough for what i'm wanting to do?

And also i was wanting to mount the subs with magnet facing outwards.

Lastly, What would be the difference between making the box sealed and ported, i'd rather have it ported but it seem like a lot of calculations to make and i don't want to break the subs :/


If anything is badly wrong can you please help me and if you have any feedback or suggestions i would be extremely interested to hear what you have to say, This is my first box and i don't want to screw it up badly!

Thank you heaps,
Darcy