Is Bi - amping worth the trouble?

Blindjim- Your interest in bi-amping seems to be driven by boredom or curiosity more than need. And, while bi-amping might be an available option, your speakers were not designed with that in mind. I believe that the Vandy and VS speakers mentioned above have proprieary inboard amplification designed specifically for the woofers they are driving. In your application, the matching would be by chance.
If you are unhappy with what your speakers provide, consider replacing them with something more satisfying. If you like what you have, then consider hiring Rives to upgrade your listening environment or buy a Magic Clock.
Otherwise just sit back and enjoy. If it ain't broke, don't fix it.

Blindjim,
You're welcome. I'm happy to hear that you find me helpful.
Passive bi-amplification amounts to sending the signal from two amplifiers into the speaker's passive crossover and, unless lack of power is an issue, does not differ substantially from bi-wiring.
True bi-amplification places an active crossover between the preamp and the power amps, sending the portion of the signal that you assign to each amplifier and subsequently to each driver (or driver set). An active crossover will normally afford much more flexibility by allowing you to alter and adjust X/O points (frequency cutoff), crossover slopes (db/octave) and increasing or decreasing relative gain.
It also does not usurp a large portion of your amplifier power as the passive crossover in your speaker will.
I am not very familiar with VS design but I'm sure I've owned something like them in the past. Unless they provide you with a way to completely bypass their internal crossover, they are not setup for true bi-amplification and the advantages it affords. Please remember that much of the advice you receive from dealers, the factory and even certain, if not all, reviewers is driven by marketing interest. This forum is a good, neutral source of info but you need to be aware that at least some of what you read here is the well-intentioned echo of the aforementioned marketing people.

I'm with Undertow. I think bi-amping your existing system is basically "busy work". It will provide a change but you shouldn't look for an improvement commensurate with the trouble and expense required. After all, you really won't be changing anything. You will still have the same drivers, crossover, etc. The only thing you can achieve is more volume and you don't seem to need that.
Your money might be better spent on real change like a new listening chair.

Zormi- Try to see bi-amping as a remedy. That is, something you apply in an attempt to overcome some shortcoming or failure in your system. You have brand new equipment ready to install in an unfinished room. Why not put it all together and see what you have before introducing change? You may not need or want to do anything at all.
Not all changes (mods) are improvements. And audio is not purely additive. More can be worse and less can be better.
Take your time and alter things gradually and, above all, one at a time. Fast changes make for slow progress and slow changes make for fast progress.
The only places where bi-amping is really useful are in powered speakers where the amps are onboard and dedicated to their assigned drivers OR in speaker systems specifically designed for use with an active crossover and multiple outboard amps. The rest of this stuff is just toyboy nonsense.

You are currently getting almost everything your speakers can provide. Someone suggested moving up in the VS line. I suggest moving beyond it. Both ideas are going to give you more future upgrade options than you will see by trying to squeeze your current speakers for the last two per cent they might have in them. Bi-amping your current speakers means driving into a cul de sac. The only way to go from there is back out.
Besides that, it's a little like putting a spoiler on your Neon.