Need help with planning a SCROG: Screen, plant, and light placement

[budomatic]

Skill: Beginner, no experience, SWC, at the planning stage.

Setup:
Two 150w HPS bulbs in the same DIY air cooled hood
26" x 24" flowering area
Tub: 10 gal. Rubbermaid (23.9" x 15.9" x 8.7") http://www.rubbermaid.com/rubbermaid/product/product.jhtml?prodId=HPProd2934118#
or 8.5 gal. Store brand (24" x 15" x 9")
PVC 1" or 1/2" screen frame

I have found the following 150W HPS bulbs:
HPS 150W GE bulb - http://electrical.hardwarestore.com...ulbs/ge-high-pressure-sodium-bulb-130113.aspx
Length: 5.75"
Diameter: 2.125"
Medium base

HPS 150W Sylvania bulb - http://www.futuregarden.com/cgi-bin/shop/30-1035.html
Length: 9.25"
Diameter: ?
Mogul base

Question 1: Are the bulbs, plants #1, #2, #3, #4 and screen correctly placed as shown in the image below?
Question 2: Can plant #5 be introduced in there?
Question 3: Will the plants be OK so close to the tub walls? (~2" from wall to center of the hole)
Question 4: Which bulbs should I get: GE or Sylvania?
Question 5: With the longer bulbs, is a 2" space between the bulbs too close? (I've approximated 2" for the socket, I don't know the exact socket length.)
Question 6: Which tub should I get: 10 gal. or 8.5 gal.?

Any help is appreciated, as this is very confusing for me.

 

[PharmaCan]

You only need one plant for a scrog that size.

PC

 

[Jnugg]

1-3 plants max with 1-2 plants being optimal IMO.You're area only measures 22' d x 24" w or 3.66 square feet.

 

[FreezerBoy]

At least the first time, stick to one sativa or two indicas. Throwing out weed you've no room for is heartbreaking.

Get the biggest tub that will fit. You're going to surrender as much as 30% to your eventual airgap. My tub is 18 gallons but only holds 12 gal of nutes, and that only after being topped off.

Any name brand light will do. The difference in those you've linked is the shorter one has a "medium" base (fits any standard table lamp or ceiling socket) The longer has a "mogul" base (slightly larger, requires mogul socket) The Mogul is the more standard size for HID and you'd be able to keep it should you upgrade the lamp later (though you'd need to upgrade the ballast as well)

 

[budomatic]

One or two clones and the big tub seems to be the best way to go.
Thank you all for the replies.