Ok, it looks like the "DM out of commission" still earns RP is going to be the verdict and I'm totally fine with that. Making that assumption:
8 RP Baern Apr 21 through Dec 20
8 RP Nyar Apr 21 through Dec 20
5 RP Cairn Aug 13 through Jan 12
5 RP Veruza Aug 13 through Jan 12
1 RP Navara Nov 19 through Dec 18
From here out, Baern and Nyar gain another RP at the 20th of each month, Cairn and Veruza gain an RP at the 12th of each month (since that is tomorrow, I'm just handing out the additional RP today), and Navara gains an RP at the 18th of each month. Course, those RP will only be assigned when XP and RP are assigned.
Because of this, Baern and Nyar will level to 5th and can level to 6th by spending 7 RP (2417 XP + 1400 level 5 XP = 3817 XP, 3750 XP needed). Cairn and Veruza can level to 5th by spending all 5 RP (1040 XP + 875 level 4 XP = 1915 XP, 1750 XP needed).
Please try to let me know if you are leveling up and get the leveled up PCs finished as soon as you can. Thanks.