From these options, i think i would be happiest being called [name_u]Rain[/name_u] [name_u]Elliot[/name_u]. This was a difficult choice!
Summary
Besides being a name that i like a lot, [name_u]Rain[/name_u] is probably the most similar in sound to my name, [name_u]Raye[/name_u]. In most cases, i might prefer to go as similar as possible and spell it [name_u]Raine[/name_u] if i could, but the main exception is when the middle name starts with an E. In my opinion, [name_u]Rain[/name_u] [name_u]Elliot[/name_u] looks so much better than [name_u]Raine[/name_u] [name_u]Elliot[/name_u] when written out anyway. I think a simple, neutral nature name would suit me well, and i have always adored the name [name_u]Elliot[/name_u], and the flow of them together is really nice.