Oops! Apologies, there was some confusion over this since v50 isn't up yet and the archival of v49 was not followed by the proper editing of the queue here immediately.
@Time Breaker gets v55 @Arrow of Light gets v56
You may not sign up for more than one queue slot at the time. Since you are hosting the ongoing UvD, you are #1 on the queue as stated in the OP. Because of this you may not sign up again until the ongoing UvD is over, sorry.
Which means you can get 55.