Dang, first I was thinking a couple Neptune Sky. Now I'm thinking a bank of the 60" OR3 LED light bars, 5 maybe 6. Price would be almost 2 grand for 6 OR3's and about $1750 for two Sky's. I don't know I have plenty of time to make a decision. T5's would be much cheaper though.
6 or 8?
$673 + ($25 x6) = $823 480W
X $300 (5 yr 18mo bulb turnover)
$1123 5 yr "plan"
$792 + ($25 x 8) = $992 640W
$1292 5yr "plan"
As pointed out to me after 5 yrs you may only need to change bulbs.
As I like to believe, you may not need to ditch your LED's in 5 yrs and resupply.
6 for $1950
2 sky run full 400W..
Now as "we" know lifespan is unpredictable really.
One word of caution as "I" see it..
I have little doubt about certain t5's being available for the 5 years and beyond, I do wonder about the "odd" sizes, like 60's.
Lumenbars are $260 each.
$1560/ 6
The LumenBar Color 60″ has 45 x 3watt
Assume 2 real watts at best..540 total W
The LumenBar Color 60" is the perfect compliment to your ATI Sunpower 60", Photon 48-V2+/50-V2+, or any other 60"-72" long aquarium light.
reefbreeders.com
Won't mention China prices..besides they decided to err "fluff" them a bit anyways.
Not anything I'm positive of but suspect with the Skys by the time you get the height right you may want to add accent bars anyways. 30x28 area each if you did L/W/H right..

Overall it would be a more.. err..."fun" system but pricey as well.
I certainly have no idea what will work best "for you"..
YMMV....
Food for thought.
Oh a bunch of these may cut cost down..Only $125 /100W or so..
https://sbreeflights.com/sbox-reef-lights/70-18-sbox-basic.html