You don’t want to ever have an unregulated heat source. If you haven’t plugged in your VE 300, maybe you can send it back for the VE 300x2 which has 2 ports. If not, get the x2 anyway and keep the original for a backup or second snake. Or sell it.
I have a half dozen RB RHPS. But I switched my newest APs to Pro Products RHPS for 2 reasons: one, it is the only UL listed RHP. Two, Bob will ask you questions and tell you exactly what wattage you need.
Best of luck