Those Phobos/Deimos units will definitely help with the coverage. I've seen them and they are pretty wide to house the T5 lamps.
Again, you should talk to some owners and pick their brain as to how they like their lights. Ask them if they think with certain re-positioning, if the lights would give adequate coverage for a 36" tank if their application is less. With your height, I would not worry about PAR & intensity with either of these 3 lamps:
Acan Lighting A103 - You can also consider using 24" fixtures mounted perpendicular x 4 or 5 fixtures - $5400 or $6750
Pacific Sun 3w Cree X-Plore - I would consider 1 master & 4 slave units @ $5494
Pacific Sun Phobos - You would need two 4' units at $6400
Aqua Illuminations SOL white or SOL blue - These are proven as well. They claim that you can cover 36" if coral placement is correct. To me this sounds like shadowing in the front and back and you better rock scape islands in the middle. But if it does cover, then you can get a 72" system, add 3 extra module and pay the small extra for the lengthened rail supports. $3299+$1587=$4886
Now for the fun part:
Aqua Illuminations are always back ordered
Acan A103 might not be out for retail sales yet
Phobos might need to be shipped from Poland
Head spinning right?