Rearranging an Antec sx1040BII

[t73]

Currently on my Antec are two rear 80mm exhaust and only a filter on front.
I'm also changing some components for silencing, like NB- Zalman NBS NB47J, HDD- Samsung P2504 & HSF- Ninja.
I thought to move the PSU to the top right corner but this won?t work, it is too crowded with two optical drivers below it,but i have two other solutions:

1. Model #1
   1.a.
   PSU placed at the bottom right of the case ?
   Need to drill holes or cut a 92mm opening at the case floor for the exhausting PSU fan. Same at the front for the 80mm intake fan, the front plastic cover will remain untouched.
   
   1.b.
   Placing a 120mm fan at the rear-
   Requires cutting the frame barrier, epoxy or silicon on cleft, making new holes & closing the unnecessary old holes.
   
   1.c.
   120mm fan were the PSU originally sits-
   Placed above the HSF on a metal plate in rotated L shape like, to limit the exhausted hot air outside through the case PSU rear opening. Plate/s will be glued by epoxy or silicon.
   
   1.d.
   Optional- Similar to 1.b. but at front-
   Measurements shows 125mm from the top of the PSU (at new location) to the top of the HDD cage.
   
   *** Disadvantage- finding a solution to reduce HDD noise, PSU may get hotter & nosier, 4x120mm fan (w/Ninjas? Fan)- too loud.
   
   
2. Model #2
   PSU at its original location with its 92mm exhaust above the HSF.
   A 140mm quite fan (or bigger) added on the case door and centralized on the MB.
   I hope I could achieve good and quite operation that way with no other case fan (with or w/out the Ninja fan)
   If that will not do, I can add a rear 120mm fan (as in 1.b), and a front one later.

What I?m actually looking for is a setting with minimal noise and use of fans but with effective air circulation.

Thanks,
t73.