i'd like to thank everyone for their feedback on this topic.
as for those still persistant on me to use a plate for this setup, i ask why do i need one? these routers will be single purpose machines. raise the bit when i need it, drop it when i don't. if i have to change the bit, the table is designed to allow easy access from the bottom and the changeout will occur during downtime. if it takes 8 hours, who cares? the bit will always raise to a set height so there is no need for further adjustment. with what i am doing, if the roundover bit is a little off, it won't be a large factor. the flushtrim bit is solely used to make wheels out of the 1/2" plywood following the pattern jig. as long as the trace bearing is raised at least 3/4", then i am good. again, no need for final adjustments.
as for stree's post, i have to disagree. i am not expecting extreme accuracy with this setup. i have a setup for my detail work that has a digital lift system and a table made of aircraft titanium honeycomb structure that i picked up while in arizona. as for the mounting of the router, how is using a plate better than directly attaching it to the tabletop that happens to be made using a 5x10 sheet of 1/4" thick T-6 aluminum? i guess that you assumed the top was made of standard particleboard, huh? I build things to last. Besides, how would you mount a plate when
the top is only 1/4" thick to begin with?
i agree with DC's last post, just because people use different techniques to do things, those that may differ from your own, doesn't make it the wrong way to do it. if you stop to think for a minute, 20 years from now, i can guarantee that every router setup, mount, and practice used today will be obsolete and vastly different. it's called innovation and progress. it doesn't make how we do things differently today wrong. everyone has to assess on their own what they need in order to do the job at hand in the most effective manner possible.
still, i really appreciate all the help and suggestions. i could use a few more routers to consider. needs to be plunge, sealed motor and gears, and powerful. i cut ALOT of wheels for the projects i do.