What would you do? - Tank Lighting Upgrade.

[scherzo]

I just bought a 4X54W TEK5 Light for my 90 Gallon (4 foot - 24" Deep) FW (in wall) tank.

I'm thinking of converting it to a reef sometime in the fall or new year.

Since it is behind a wall I don't really mind the look of retro-fit lighting so my question is.

If you wanted to have the widest range of possibilities (getting fairly good par at med to lower levels of the tank) would you:

1) Add 2 more T5HO Retro Fit bulbs to the current 4X54 T5HO
2) Add 4 more T5HO Retrofit bulbs to the current 4X54 T5HO
3) Add 2 more 175W MH to supplement the 4X54 T5HO
4) Scrap the 4X54s and get 2X250W MH

Cost should be considered.. wouldn't want to go NUTS over this upgrade...
Cooling isn't an issue because it is in the basement of the house and it potentially could have a 75 gallon sump which is on the basement slab floor which stays cool.

- My head spins with all of the possibilities.