If in the ROM thread it is stated that it's compatible with the 900H, then go ahead. Of not, well, then it's not a good idea.
Phone: SAMSUNG SM-G900F
Firmware: Stock ANG9(XEF), Android version 4.4.2
Recovery: PhilZ recovery v6.26.6
Other info: Xposed with lots of cool modules(credits to the creators )
Love this phone more than all the ones I had before COMBINED.
If you're not sure wether to buy this phone or not, I recommend you do.
And remember to have a look at this
if you are a noob and/or curious what might be behind this link.