Who to R5? Venom, Corvus, Medusa? Read description for more details please

So I have 2 cosmic 4-5 gems and 3 cosmic awakening gems.
Venom Is R4 but Medusa and Corvus are R3.
I have enough T2A to R4 1 of them and then R5 right now and will have enough for another R4 in about 1-2 months.
So my question is what to do?
1. R5 Venom and Corvus?
2. R5 Venom and Medusa?
3. R5 either Corvus or Medusa now and wait to R5 the other in about 1-2 months?
Venom Is R4 but Medusa and Corvus are R3.
I have enough T2A to R4 1 of them and then R5 right now and will have enough for another R4 in about 1-2 months.
So my question is what to do?
1. R5 Venom and Corvus?
2. R5 Venom and Medusa?
3. R5 either Corvus or Medusa now and wait to R5 the other in about 1-2 months?
Who to R5? Venom, Corvus, Medusa? Read description for more details please 21 votes
0
Comments
PS And Colossus will be a pain for guaranteed crit champions as well.