I would call Brian at VMPS, he answers the phone most of the time, I own the FF3 SRE wich was a special edition, it has a 48in midrange panel but the RM40 has a better midrange now then I have so they should be better, I power mine with 400 watts from both amps and I dont want to speculate and stear you wrong.
By the way my speakers way over 300lbs each but on a 2 wheel "dolly" they are a breeze to moove, and they are tall and pretty narrow, moving them a bit here and there is alot easier then you think...1 guy in good shape can do it easily, atleast mine you can.......and yours weigh over 100lbs less.
Over at Audioasylum there is an entire VMPS club you can ask questions and dig for much more info then will usually be found in these parts. My gut tells me you can use what you have but will the tubes give you loud levels, that is what I dont know.
By the way my speakers way over 300lbs each but on a 2 wheel "dolly" they are a breeze to moove, and they are tall and pretty narrow, moving them a bit here and there is alot easier then you think...1 guy in good shape can do it easily, atleast mine you can.......and yours weigh over 100lbs less.
Over at Audioasylum there is an entire VMPS club you can ask questions and dig for much more info then will usually be found in these parts. My gut tells me you can use what you have but will the tubes give you loud levels, that is what I dont know.